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RXEF050 Spec Datasheet

Littelfuse Inc.

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Datasheet

POLYSWITCH RESETTABLE
DEVICES
Radial-Leaded Devices
Littelfuse’s PolySwitch radial-leaded products represent
the most comprehensive and complete set of PPTC
products available in the industry today.
RGEF series for hold currents up to 14A
RHEF series for flatter thermal derating and operating
temperatures up to 125°C
RUEF series for balance of voltage rating (30V) and
hold current (up to 9A)
RUSBF series for fast time-to-trip and low-resistance
computer applications
RXEF series for low hold currents (down to 50mA)
and high voltage rating (up to 72V)
RKEF series for balance of voltage rating (60V) and
hold current (up to 5A)
Now offering halogen free versions of all products
BENEFITS
Many product choices help provide engineers more
design flexibility
Compatible with high-volume electronics assembly
Assists in meeting regulatory requirements
Higher voltage ratings allow use in new applications
FEATURES
RoHS compliant
Halogen free
(refers to: Br900ppm, Cl900ppm, Br+Cl1500ppm)
Broadest range of radial-leaded resettable devices
available in the industry
Current ratings from 50mA to 15A
Voltage ratings from 6V (computer and electronic
applications) to 72V
Agency recognition : UL, CSA, TÜV, CQC**
Fast time-to-trip
Low resistance
**CQC only applies to RXEF, RUEF family parts
APPLICATIONS
Satellite video receivers
Industrial controls
Transformers
Modems
CD-ROMs
Game machines
Phones
Fax machines
Analog and digital line cards
Printers
Intelligent appliance
Robotic machine
Power supply
Security
Lighting
Medical application
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc. 154
Application Selection Guide
The guide below lists PolySwitch radial-leaded devices that are typically used in each of the applications described.
Specifications for the suggested device part numbers can be found in this section.
Once a part number has been selected, the user should evaluate and test each product for its intended application.
Table R1 — Product Series - Current Rating, Voltage Rating/Typical Resistance
Voltage Rating
RXEF
72V
RKEF
60V
RXEF
60V
RUEF
30V
RGEF
16V
RHEF
16V
RHEF
30V
RUSBF
16V
RUSBF
6V
Hold Current (A)
0.050 9.20Ω ——————
0.100 3.50Ω ——————
0.170 4.30Ω ——————
0.200 2.290Ω ————————
0.250 1.60 ————————
0.300 1.11 ————————
0.400 0.71 ————————
0.500 0.640Ω 0.425Ω ————0.68Ω — —
0.550 —————————
0.650 0.400Ω 0.350Ω ———————
0.700 ——————0.42Ω — —
0.750 0.325Ω 0.295Ω ——————0.140Ω
0.900 0.255Ω 0.255Ω 0.095Ω ———0.100Ω
1.000 ——————0.24Ω — —
1. 10 0 0.200Ω 0.225Ω 0.075Ω ———0.075Ω
1.200 ————————0.080Ω
1.350 0.155Ω 0.165Ω 0.060Ω ———0.060Ω
1.550 ————————0.058Ω
1.600 0.115Ω 0.150Ω 0.050Ω ———0.050Ω
1.850 0.100Ω 0.106Ω 0.045Ω ———0.045Ω
1.900 —————————
Protection Application
PolySwitch Resettable Devices — Key Selection Criteria
Small Size Flatter Derating Lower Current Higher Voltage
Electromagnetic Loads RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
Halogen Lighting RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
Lighting Ballast RXEF (<72V)
Loudspeakers RXEF (<72V) RXEF (<72V), RKEF (<60V)
Medical Equipment RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
MOSFET Devices RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
Motors, Fans and Blowers RXEF (<72V), RGEF (<16V) RHEF (<16V)
POS Equipment RXEF (<72V), RUEF (<30V)
Process and Industrial Controls RXEF (<72V), RUEF (<30V)
Satellite Video Receivers RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
Security and Fire Alarm Systems RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
Test and Measurement Equipment RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
Transformers RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
DDC Computer and Consumer Electronics RUEF (<30V)
Mouse and Keyboard RUEF (<30V)
SCSI RUEF (<30V)
USB RUSBF (<16V)
Traces and Printed Circuit Board Protection RGEF (<16V), RUEF (<30V) RHEF (<16V) RXEF (<72V), RKEF (<60V)
Note : This list is not exhaustive. Littelfuse welcomes customer input for additional application ideas for PolySwitch resettable devices.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
155
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R2 — Thermal Derating [Hold Current (A) at Ambient Temperature (°C)]
Part
Number
Maximum Ambient Temperature
-40°C -20°C 0°C 20°C 25°C 40°C 50°C 60°C 70°C 85°C 125°C
RXEF
60V
RXEF005 0.078 0.068 0.06 0.05 0.048 0.04 0.035 0.032 0.027 0.02
RXEF010 0.160 0.140 0.11 0.10 0.096 0.08 0.072 0.067 0.050 0.04
RXEF017 0.260 0.230 0.21 0.17 0.160 0.14 0.120 0.110 0.090 0.07
RXEF
72V
RXEF020 0.31 0.27 0.24 0.20 0.19 0.16 0.14 0.13 0.11 0.08
RXEF025 0.39 0.34 0.30 0.25 0.24 0.20 0.18 0.16 0.14 0.10
RXEF030 0.47 0.41 0.36 0.30 0.29 0.24 0.22 0.20 0.16 0.12
RXEF040 0.62 0.54 0.48 0.40 0.38 0.32 0.29 0.25 0.22 0.16
RXEF050 0.78 0.68 0.60 0.50 0.48 0.41 0.36 0.32 0.27 0.20
RXEF065 1. 01 0.88 0.77 0.65 0.62 0.53 0.47 0.41 0.35 0.26
RXEF075 1. 16 1.02 0.89 0.75 0.72 0.61 0.54 0.47 0.41 0.30
RXEF090 1.40 1.22 1.07 0.90 0.86 0.73 0.65 0.57 0.49 0.36
RXEF110 1.71 1.50 1.31 1. 10 1.06 0.89 0.79 0.69 0.59 0.44
RXEF135 2.09 1.84 1.61 1.35 1.30 1.09 0.97 0.85 0.73 0.54
RXEF160 2.48 2.18 1.90 1.60 1.54 1.30 1. 1 5 1. 01 0.86 0.64
RXEF185 2.87 2.52 2.20 1.85 1.78 1.50 1.33 1. 17 1. 0 0 0.74
RXEF250 3.88 3.40 2.98 2.50 2.40 2.03 1.80 1.58 1.35 1. 0 0
RXEF300 4.65 4.08 3.57 3.00 2.88 2.43 2.16 1.89 1.62 1.20
RXEF375 5.81 5.10 4.46 3.75 3.60 3.04 2.70 2.36 2.03 1.50
Table R1 — Product Series - Current Rating, Voltage Rating/Typical Resistance (Cont’d)
Voltage Rating
RXEF
72V
RKEF
60V
RXEF
60V
RUEF
30V
RGEF
16V
RHEF
16V
RHEF
30V
RUSBF
16V
RUSBF
6V
Hold Current (A)
2.000 — — — — — 0.061 — — —
2.500 0.065Ω 0.063Ω — 0.030Ω 0.0380Ω — 0.030Ω —
3.000 0.050Ω 0.040Ω — 0.035Ω 0.0514Ω 0.0430Ω
3.750 0.040Ω 0.029Ω — — — — — — —
4.000 — 0.026Ω — 0.020Ω 0.0300Ω 0.0320Ω
4.500 — — — — — 0.0290Ω — — —
5.000 — 0.021Ω — 0.020Ω 0.0192Ω
5.500 — — — — — 0.0200Ω — — —
6.000 — — — 0.013Ω 0.0145Ω 0.0175Ω — — —
6.500 — — — — — 0.0144Ω — — —
7.000 — — — 0.013Ω 0.0105Ω 0.0132Ω — — —
7.500 — — — — — 0.0120Ω — — —
8.000 — — — 0.013Ω 0.0086Ω 0.011 — — —
9.000 — — — 0.008Ω 0.0070Ω 0.010 — — —
10.00 — — — — 0.0056Ω 0.0083Ω — — —
11. 0 0 — — — — 0.0050Ω 0.0073Ω — — —
12.00 — — — — 0.0046Ω — — — —
13.00 — — — — — 0.0055Ω — — —
14.00 — — — — 0.0040Ω 0.0050Ω — — —
15.00 0.0050Ω
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R2 — Thermal Derating [Hold Current (A) at Ambient Temperature (°C)] (Cont’d)
Part
Number
Maximum Ambient Temperature
-40°C -20°C 0°C 20°C 25°C 40°C 50°C 60°C 70°C 85°C 125°C
RKEF; 60V
RKEF050 0.73 0.65 0.58 0.50 0.48 0.42 0.38 0.34 0.31 0.26
RKEF065 0.94 0.85 0.75 0.65 0.63 0.54 0.50 0.44 0.40 0.34
RKEF075 1.09 0.98 0.86 0.75 0.73 0.62 0.58 0.51 0.46 0.39
RKEF090 1.30 1.17 1.04 0.90 0.87 0.75 0.69 0.61 0.55 0.47
RKEF110 1.60 1.43 1.27 1.10 1.06 0.92 0.85 0.75 0.67 0.57
RKEF135 1.96 1.76 1.55 1.35 1.31 1.12 1.04 0.92 0.83 0.71
RKEF160 2.32 2.08 1.84 1.60 1.55 1.33 1.23 1.08 0.98 0.83
RKEF185 2.68 2.41 2.13 1.85 1.79 1.54 1.43 1.26 1.13 0.96
RKEF250 3.63 3.25 2.88 2.50 2.43 2.08 1.93 1.70 1.52 1.31
RKEF300 4.35 3.90 3.45 3.00 2.91 2.50 2.30 2.04 1.84 1.55
RKEF375 5.44 4.88 4.31 3.75 3.64 3.11 2.90 2.54 2.29 1.94
RKEF400 5.80 5.20 4.60 4.00 3.88 3.32 3.08 2.73 2.45 2.08
RKEF500 7.25 6.50 5.75 5.00 4.85 4.15 3.85 3.41 3.06 2.59
RUEF; 30V
RUEF090 1.31 1. 17 1.04 0.90 0.87 0.75 0.69 0.61 0.55 0.47
RUEF110 1.60 1.43 1.27 1. 10 1.07 0.91 0.85 0.75 0.67 0.57
RUEF135 1.96 1. 76 1.55 1.35 1.31 1. 1 2 1.04 0.92 0.82 0.70
RUEF160 2.32 2.08 1.84 1.60 1.55 1.33 1.23 1.09 0.98 0.83
RUEF185 2.68 2.41 2.13 1.85 1.79 1.54 1.42 1.26 1. 1 3 0.96
RUEF250 3.63 3.25 2.88 2.50 2.43 2.08 1.93 1.70 1.53 1.30
RUEF300 4.35 3.90 3.45 3.00 2.91 2.49 2.31 2.04 1.83 1.56
RUEF400 5.80 5.20 4.60 4.00 3.88 3.32 3.08 2.72 2.44 2.08
RUEF500 7.25 6.50 5.75 5.00 4.85 4.15 3.85 3.40 3.05 2.60
RUEF600 8.70 7.80 6.90 6.00 5.82 4.98 4.62 4.08 3.66 3.12
RUEF700 10.15 9.10 8.05 7. 0 0 6.79 5.81 5.39 4.76 4.27 3.64
RUEF800 11.60 10.40 9.20 8.00 7. 76 6.64 6.16 5.44 4.88 4.16
RUEF900 13.05 11.70 10.35 9.00 8.73 7.47 6.93 6.12 5.49 4.68
RHEF; 30V - High Temperature
RHEF050 0.68 0.62 0.56 0.51 0.50 0.44 0.40 0.36 0.34 0.28 0.12
RHEF070 0.95 0.87 0.79 0.72 0.70 0.62 0.56 0.51 0.47 0.39 0.17
RHEF100 1.36 1.24 1. 1 3 1.03 1. 0 0 0.89 0.80 0.73 0.67 0.56 0.24
RUSBF; 16V
RUSBF090 1.31 1. 17 1.04 0.90 0.87 0.75 0.69 0.61 0.55 0.47
RUSBF110 1.60 1.43 1.27 1. 10 1.07 1. 0 0 0.92 0.75 0.67 0.57
RUSBF135 1.96 1. 76 1.55 1.35 1.31 1. 1 2 1.04 0.92 0.82 0.70
RUSBF160 2.32 2.08 1.84 1.60 1.55 1.33 1.23 1.09 0.98 0.83
RUSBF185 2.68 2.41 2.13 1.85 1.79 1.54 1.42 1.26 1. 1 3 0.96
RUSBF250 3.63 3.25 2.88 2.50 2.43 2.08 1.93 1.70 1.53 1.30
RGEF; 16V
RGEF250 3.7 3.3 3.0 2.6 2.50 2.2 2.0 1. 8 1. 6 1. 2
RGEF300 4.4 4.0 3.6 3.1 3.00 2.6 2.4 2.1 1. 9 1. 4
RGEF400 5.9 5.3 4.8 4.1 4.00 3.5 3.2 2.8 2.5 1. 9
RGEF500 7. 3 6.6 6.0 5.2 5.00 4.4 4.0 3.6 3.1 2.4
RGEF600 8.8 8.0 7. 2 6.2 6.00 5.2 4.8 4.2 3.8 2.8
RGEF700 10.3 9.3 8.4 7. 3 7. 0 0 6.2 5.6 5.0 4.4 3.3
RGEF800 11. 7 10.7 9.6 8.3 8.00 6.9 6.4 5.6 5.1 3.7
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
157
PolySwitch Resettable Devices
Radial-Leaded Devices
Figures R1-R5 — Thermal Derating Curve
RXEF Figure R1
Table R2 — Thermal Derating [Hold Current (A) at Ambient Temperature (°C)] (Cont’d)
Part
Number
Maximum Ambient Temperature
-40°C -20°C 0°C 20°C 25°C 40°C 50°C 60°C 70°C 85°C 125°C
RGEF; 16V
RGEF900 13.2 11. 9 10.7 9.4 9.00 7. 9 7. 2 6.4 5.6 4.2
RGEF1000 14.7 13.3 12.0 10.3 10.00 8.7 8.0 7. 0 6.3 4.7
RGEF1100 16.1 14.6 13.1 11. 5 11. 0 0 9.7 8.8 7. 8 6.9 5.2
RGEF1200 1 7. 6 16.0 14.4 12.4 12.00 10.4 9.6 8.4 7. 6 5.6
RGEF1400 20.5 18.7 16.8 14.5 14.00 12.1 11. 2 9.8 8.9 6.5
RHEF; 16V - High Temperature
RHEF200 2.71 2.49 2.26 2.06 2.00 1.77 1.60 1.46 1.34 1. 11 0.49
RHEF300 4.07 3.74 3.41 3.09 3.00 2.65 2.40 2.21 2.00 1.66 0.74
RHEF400 5.57 5.11 4.65 4.22 4.00 3.62 3.29 3.01 2.73 2.27 1. 01
RHEF450 6.10 5.60 5.10 4.60 4.50 4.00 3.60 3.30 3.00 2.50 1. 10
RHEF550 7.47 6.86 6.24 5.66 5.50 4.85 4.41 4.04 3.66 3.05 1.36
RHEF600 8.20 7.50 6.80 6.20 6.00 5.30 4.90 4.40 4.00 3.30 1.50
RHEF650 8.80 8.10 7.40 6.70 6.50 5.70 5.30 4.80 4.30 3.60 1.60
RHEF700 9.51 8.73 7.95 7.20 7. 0 0 6.17 5.61 5.15 4.66 3.88 1.73
RHEF750 10.20 9.40 8.60 7.70 7.50 6.60 6.10 5.60 5.00 4.10 1.90
RHEF800 10.87 9.98 9.08 8.23 8.00 7.06 6.41 5.88 5.33 4.43 1.97
RHEF900 12.21 11. 19 10.16 9.26 9.00 7.97 7.20 6.56 6.04 5.01 2.19
RHEF1000 13.60 12.50 11.40 10.30 10.00 8.80 8.10 7.40 6.60 5.50 2.50
RHEF1100 14.94 13.72 12.49 11.31 11. 0 0 9.70 8.82 8.09 7.32 6.09 2.71
RHEF1300 17.70 16.30 14.80 13.40 13.00 11.40 10.50 9.60 8.60 7.20 3.30
RHEF1400 19.01 17.46 15.89 14.40 14.00 12.35 11.22 10.29 9.32 7. 7 6 3.45
RHEF1500 20.40 18.80 1 7. 1 0 15.50 15.00 13.20 12.10 11. 10 9.90 8.30 3.80
RUSBF; 6V
RUSBF075 1.05 0.95 0.85 0.75 0.73 0.65 0.60 0.55 0.50 0.43
RUSBF120 1.69 1.52 1.36 1.20 1. 1 6 1.04 0.96 0.88 0.80 0.68
RUSBF155 2.17 1.96 1.75 1.55 1.50 1.34 1.24 1. 1 4 1.03 0.88
-40 -20 020406
08
0
% of Rated Hold and Trip Current
Ambient Temperature (˚C)
200
150
100
50
0
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Figures R1-R5 — Thermal Derating Curve (Cont’d)
RKEF
RHEF
Figure R2
Figure R3
Figure R4
% of Rated Hold and Trip Current
Ambient Temperature (˚C)
200
150
100
50
0
-40 -20 020406
08
0
% of Rated Hold and Trip Current
Ambient Temperature (˚C)
200
150
100
50
0
-40 -20 020406
08
0
A
A
B
B
-40 -20 0604020 80 100 120
% of Rated Hold and Trip Current
Ambient Temperature (˚C)
200
150
100
50
0
A = RUSBF075,
RUSBF120,
RUSBF155
B = RUEF,
and all other RUSBF
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
159
PolySwitch Resettable Devices
Radial-Leaded Devices
Figures R1-R5 — Thermal Derating Curve (Cont’d)
RGEF Figure R5
-40 -20 020406
08
0
% of Rated Hold and Trip Current
Ambient Temperature (˚C)
200
150
100
50
0
Table R3 — Electrical Characteristics
Part
Number
IHITVMAX IMAX PD Typ Max Time-to-trip RMIN RMAX R1MAX Lead Size
[mm2 (AWG)]
(A) (A) (VDC) (VAC RMS)(DCADC) (ACARMS)(W) (A) (s) (Ω) (Ω) (Ω)
RXEF
60V
RXEF005 0.05 0.10 60 40 0.22 0.25 5.0 7. 3 11. 10 20.00 [0.128mm2 (26)]
RXEF010 0.10 0.20 60 40 0.38 0.50 4.0 2.5 4.50 7.50 [0.205mm2 (24)]
RXEF017 0.17 0.34 60 40 0.48 0.85 3.0 3.3 5.21 8.00 [0.205mm2 (24)]
RXEF
72V
RXEF020 0.20 0.40 72 72 40 40 0.41 1. 0 0 2.2 1.83 2.75 4.40 [0.205mm2 (24)]
RXEF025 0.25 0.50 72 72 40 40 0.45 1.25 2.5 1.25 1.95 3.00 [0.205mm2 (24)]
RXEF030 0.30 0.60 72 72 40 40 0.49 1.50 3.0 0.88 1.33 2.10 [0.205mm2 (24)]
RXEF040 0.40 0.80 72 72 40 40 0.56 2.00 3.8 0.55 0.86 1.29 [0.205mm2 (24)]
RXEF050 0.50 1. 0 0 72 72 40 40 0.77 2.50 4.0 0.50 0.77 1. 17 [0.205mm2 (24)]
RXEF065 0.65 1.30 72 72 40 40 0.88 3.25 5.3 0.31 0.48 0.72 [0.205mm2 (24)]
RXEF075 0.75 1.50 72 72 40 40 0.92 3.75 6.3 0.25 0.40 0.60 [0.205mm2 (24)]
RXEF090 0.90 1.80 72 72 40 40 0.99 4.50 7. 2 0.20 0.31 0.47 [0.205mm2 (24)]
RXEF110 1. 10 2.20 72 72 40 40 1.50 5.50 8.2 0.15 0.25 0.38 [0.520mm2 (20)]
RXEF135 1.35 2.70 72 72 40 40 1.70 6.75 9.6 0.12 0.19 0.30 [0.520mm2 (20)]
RXEF160 1.60 3.20 72 72 40 40 1.90 8.00 11. 4 0.09 0.14 0.22 [0.520mm2 (20)]
RXEF185 1.85 3.70 72 72 40 40 2.10 9.25 12.6 0.08 0.12 0.19 [0.520mm2 (20)]
RXEF250 2.50 5.00 72 72 40 40 2.50 12.50 15.6 0.05 0.08 0.13 [0.520mm2 (20)]
RXEF300 3.00 6.00 72 72 40 40 2.80 15.00 19.8 0.04 0.06 0.10 [0.520mm2 (20)]
RXEF375 3.75 7.50 72 72 40 40 3.20 18.75 24.0 0.03 0.05 0.08 [0.520mm2 (20)]
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R3 — Electrical Characteristics (Cont’d)
Part
Number
IHITVMAX IMAX PD Typ Max Time-to-trip RMIN RMAX R1MAX Lead Size
[mm2 (AWG)]
(A) (A) (VDC) (VAC RMS)(DCADC) (ACARMS)(W) (A) (s) (Ω) (Ω) (Ω)
RKEF; 60V
RKEF050 0.50 1. 0 0 60 40 1.00 8.00 0.8 0.320 0.529 0.900 [0.205mm2 (24)]
RKEF065 0.65 1.30 60 40 1.25 8.00 1.0 0.250 0.450 0.720 [0.205mm2 (24)]
RKEF075 0.75 1.50 60 40 1.40 8.00 1.5 0.200 0.390 0.640 [0.205mm2 (24)]
RKEF090 0.90 1.80 60 40 1.50 8.00 2.0 0.190 0.320 0.520 [0.205mm2 (24)]
RKEF110 1. 10 2.20 60 40 2.20 8.00 3.0 0.170 0.280 0.470 [0.520mm2 (20)]
RKEF135 1.35 2.70 60 40 2.30 8.00 4.5 0.110 0.220 0.370 [0.520mm2 (20)]
RKEF160 1.60 3.20 60 40 2.40 8.20 9.0 0.100 0.200 0.320 [0.520mm2 (20)]
RKEF185 1.85 3.70 60 40 2.60 9.25 12.6 0.060 0.152 0.250 [0.520mm2 (20)]
RKEF250 2.50 5.00 60 40 2.80 12.50 15.6 0.040 0.085 0.140 [0.520mm2 (20)]
RKEF300 3.00 6.00 60 40 3.20 15.00 19.8 0.030 0.050 0.080 [0.520mm2 (20)]
RKEF375 3.75 7.50 60 40 3.40 18.75 22.0 0.017 0.040 0.060 [0.520mm2 (20)]
RKEF400 4.00 8.00 60 40 3.70 20.00 24.0 0.014 0.038 0.060 [0.520mm2 (20)]
RKEF500 5.00 10.00 60 40 5.00 25.00 28.0 0.012 0.030 0.050 [0.520mm2 (20)]
RUEF; 30V
RUEF090 0.90 1.80 30 30 100 70 0.60 4.50 5.9 0.070 0.120 0.22 [0.205mm2 (24)]
RUEF110 1. 10 2.20 30 30 100 70 0.70 5.50 6.6 0.070 0.100 0.17 [0.205mm2 (24)]
RUEF135 1.35 2.70 30 30 100 70 0.80 6.75 7. 3 0.040 0.080 0.13 [0.205mm2 (24)]
RUEF160 1.60 3.20 30 30 100 70 0.90 8.00 8.0 0.030 0.070 0.11 [0.205mm2 (24)]
RUEF185 1.85 3.70 30 30 100 70 1. 0 0 9.25 8.7 0.030 0.060 0.09 [0.205mm2 (24)]
RUEF250 2.50 5.00 30 30 100 70 1.20 12.50 10.3 0.020 0.040 0.07 [0.205mm2 (24)]
RUEF300 3.00 6.00 30 30 100 70 2.00 15.00 10.8 0.020 0.050 0.08 [0.520mm2 (20)]
RUEF400 4.00 8.00 30 30 100 70 2.50 20.00 12.7 0.010 0.030 0.05 [0.520mm2 (20)]
RUEF500 5.00 10.00 30 30 100 70 3.00 25.00 14.5 0.010 0.030 0.05 [0.520mm2 (20)]
RUEF600 6.00 12.00 30 30 100 70 3.50 30.00 16.0 0.005 0.020 0.04 [0.520mm2 (20)]
RUEF700 7. 0 0 14.00 30 30 100 70 3.80 35.00 1 7. 5 0.005 0.020 0.03 [0.520mm2 (20)]
RUEF800 8.00 16.00 30 30 100 70 4.00 40.00 18.8 0.005 0.013 0.02 [0.520mm2 (20)]
RUEF900 9.00 18.00 30 30 100 70 4.20 45.00 20.0 0.005 0.010 0.02 [0.520mm2 (20)]
RHEF*, 30V - High Temperature
RHEF050 0.5 0.9 30 40 0.9 2.5 2.5 0.480 0.780 1. 10 [0.205mm2 (24)]
RHEF070 0.7 1. 4 30 40 1. 4 3.5 3.2 0.300 0.540 0.80 [0.205mm2 (24)]
RHEF100 1. 0 1. 8 30 40 1. 4 5.0 5.2 0.180 0.300 0.43 [0.205mm2 (24)]
RUSBF; 16V
RUSBF090 0.90 1. 8 16 40 0.6 8.0 1. 2 0.070 0.120 0.180 [0.205mm2 (24)]
RUSBF110 1. 10 2.2 16 40 0.7 8.0 2.3 0.050 0.095 0.140 [0.205mm2 (24)]
RUSBF135 1.35 2.7 16 40 0.8 8.0 4.5 0.040 0.074 0.112 [0.205mm2 (24)]
RUSBF160 1.60 3.2 16 40 0.9 8.0 9.0 0.030 0.061 0.110 [0.205mm2 (24)]
RUSBF185 1.85 3.7 16 40 1. 0 8.0 10.0 0.030 0.051 0.090 [0.205mm2 (24)]
RUSBF250 2.50 5.0 16 40 1. 2 8.0 40.0 0.020 0.036 0.060 [0.205mm2 (24)]
RGEF*; 16V
RGEF250 2.5 4.7 16 100 1. 0 12.5 5.0 0.0220 0.0350 0.0530 [0.205mm2 (24)]
RGEF300 3.0 5.1 16 100 2.3 15.0 1. 0 0.0380 0.0645 0.0975 [0.520mm2 (20)]
RGEF400 4.0 6.8 16 100 2.4 20.0 1. 7 0.0210 0.0390 0.0600 [0.520mm2 (20)]
RGEF500 5.0 8.5 16 100 2.6 25.0 2.0 0.0150 0.0240 0.0340 [0.520mm2 (20)]
RGEF600 6.0 10.2 16 100 2.8 30.0 3.3 0.0100 0.0190 0.0280 [0.520mm2 (20)]
RGEF700 7. 0 11. 9 16 100 3.0 35.0 3.5 0.0077 0.0131 0.0200 [0.520mm2 (20)]
RGEF800 8.0 13.6 16 100 3.0 40.0 5.0 0.0056 0.0110 0.0175 [0.520mm2 (20)]
RGEF900 9.0 15.3 16 100 3.3 45.0 5.5 0.0047 0.0091 0.0135 [0.520mm2 (20)]
RGEF1000 10.0 1 7. 0 16 100 3.6 50.0 6.0 0.0040 0.0070 0.0102 [0.520mm2 (20)]
RGEF1100 11. 0 18.7 16 100 3.7 55.0 7. 0 0.0037 0.0060 0.0089 [0.520mm2 (20)]
RGEF1200 12.0 20.4 16 100 4.2 60.0 7. 5 0.0033 0.0057 0.0086 [0.823mm2 (18)]
RGEF1400 14.0 23.8 16 100 4.6 70.0 9.0 0.0026 0.0043 0.0064 [0.823mm2 (18)]
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
161
PolySwitch Resettable Devices
Radial-Leaded Devices
Notes:
IH : Hold current: maximum current device will pass without interruption in 20°C still air.
IT : Trip current: minimum current that will switch the device from low resistance to high resistance in 20°C still air.
VMAX : Maximum continuous voltage device can withstand without damage at rated current.
IMAX : Maximum fault current device can withstand without damage at rated voltage.
PD : Power dissipated from device when in the tripped state in 20°C still air.
RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified.
RMAX : Maximum resistance of device as supplied at 20°C unless otherwise specified.
R1MAX :
Maximum resistance of device when measured one hour post reflow (surface-mount device) or one hour post trip (radial-leaded device) at 20°C unless otherwise specified.
* Electrical characteristics determined at 25°C.
Table R3 — Electrical Characteristics (Cont’d)
Part
Number
IHITVMAX IMAX PD Typ Max Time-to-trip RMIN RMAX R1MAX Lead Size
[mm2 (AWG)]
(A) (A) (VDC) (VAC RMS)(DCADC) (ACARMS)(W) (A) (s) (Ω) (Ω) (Ω)
RHEF*; 16V - High Temperature
RHEF200 2.0 3.8 16 100 1. 4 10.0 4.3 0.0450 0.07400 0.1100 [0.205mm2 (24)]
RHEF300 3.0 6.0 16 100 3.0 15.0 5.0 0.0330 0.05300 0.0790 [0.520mm2 (20)]
RHEF400 4.0 7. 5 16 100 3.3 20.0 5.0 0.0240 0.04000 0.0600 [0.520mm2 (20)]
RHEF450 4.5 7. 8 16 100 3.6 22.5 3.0 0.0220 0.03600 0.0540 [0.520mm2 (20)]
RHEF550 5.5 10.0 16 100 3.5 27.5 6.0 0.0150 0.02500 0.0370 [0.520mm2 (20)]
RHEF600 6.0 10.8 16 100 4.1 30.0 5.0 0.0130 0.02150 0.0320 [0.520mm2 (20)]
RHEF650 6.5 12.0 16 100 4.1 32.5 5.5 0.0110 0.01750 0.0260 [0.520mm2 (20)]
RHEF700 7. 0 13.0 16 100 4.0 35.0 7. 0 0.0100 0.01640 0.0250 [0.520mm2 (20)]
RHEF750 7. 5 13.1 16 100 4.5 37.5 7. 0 0.0094 0.01530 0.0220 [0.520mm2 (20)]
RHEF800 8.0 15.0 16 100 4.2 40.0 8.0 0.0080 0.01350 0.0200 [0.520mm2 (20)]
RHEF900 9.0 16.5 16 100 5.0 45.0 10.0 0.0074 0.01200 0.0170 [0.520mm2 (20)]
RHEF1000 10.0 18.5 16 100 5.3 50.0 9.0 0.0062 0.01050 0.0150 [0.520mm2 (20)]
RHEF1100 11. 0 20.0 16 100 5.5 55.0 11. 0 0.0055 0.00900 0.0130 [0.520mm2 (20)]
RHEF1300 13.0 24.0 16 100 6.9 65.0 13.0 0.0041 0.00690 0.0100 [0.823mm2 (18)]
RHEF1400 14.0 27.0 16 100 6.9 70.0 13.0 0.0030 0.00600 0.0090 [0.823mm2 (18)]
RHEF1500 15.0 28.0 16 100 7. 0 75.0 20.0 0.0032 0.00613 0.0092 [0.823mm2 (18)]
RUSBF; 6V
RUSBF075 0.75 1.30 6 — 40 0.3 8.0 0.4 0.110 0.1750 0.23 [0.205mm2 (24)]
RUSBF120 1.20 2.00 6 — 40 0.6 8.0 0.5 0.070 0.0975 0.14 [0.205mm2 (24)]
RUSBF155 1.55 2.65 6 — 40 0.6 7. 8 2.2 0.040 0.0705 0.10 [0.205mm2 (24)]
Figure R6
Figure R9
Figure R7
Figure R10
Figure R8
Figure R11
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Figures R6-R14 — Dimension Figures
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R4 — Dimensions and Weights (Cont’d)
Part
Number
Dimensions in Millimeters (Inches)
Figure Device Mass (g)
(Only for Reference)
A B C D E F H J
Min Max Min Max Min Max Min Max Min Max Ty p Ty p Ty p
RKEF; 60V
RKEF050 7.10 11.43 4.32 5.84 7.60 3.56 R10, R13, 0.166
(0.28) (0.45) (0.17) (0.23) (0.30) (0.14) R14
RKEF065 7.11 12.20 4.32 5.84 7.60 3.56 R10, R13, 0.182
(0.28) (0.48) (0.17) (0.23) (0.30) (0.14) R14
RKEF075 7.87 12.20 4.32 5.84 7.60 3.56 R10, R13, 0.201
(0.31) (0.48) (0.17) (0.23) (0.30) (0.14) R14
RKEF090 7.87 13.97 4.32 5.84 7.60 3.56 R10, R13, 0.235
(0.31) (0.55) (0.17) (0.23) (0.30) (0.14) R14
RKEF110 7.60 15.00 4.32 5.84 7.60 4.10 R10, R13, 0.353
(0.30) (0.59) (0.17) (0.23) (0.30) (0.16) R14
RKEF135 10.20 17.00 4.32 5.84 7.60 3.81 R11, R13, 0.438
(0.40) (0.67) (0.17) (0.23) (0.30) (0.15) R14
RKEF160 12.20 18.30 4.32 5.84 7.60 3.81 R11, R13, 0.546
(0.48) (0.72) (0.17) (0.23) (0.30) (0.15) R14
RKEF185 13.00 18.80 4.32 5.84 7.60 3.81 R11, R13, 0.538
(0.51) (0.74) (0.17) (0.23) (0.30) (0.15) R14
RKEF250 14.00 20.60 4.32 5.84 7.60 3.00 R11, R13, 0.775
(0.55) (0.81) (0.17) (0.23) (0.30) (0.12) R14
RKEF300 16.50 21.20 4.32 5.84 7.60 3.00 R11, R13, 0.971
(0.65) (0.83) (0.17) (0.23) (0.30) (0.12) R14
RKEF375 16.50 25.20 9.40 10.90 7.60 3.00 R11, R13, 1.142
(0.65) (0.99) (0.37) (0.43) (0.30) (0.12) R14
RKEF400 21.00 24.90 9.40 10.90 7.60 3.00 R11, R13, 1.391
(0.83) (0.98) (0.37) (0.43) (0.30) (0.12) R14
RKEF500 24.10 29.00 9.40 10.90 7.60 3.00 R11, R13, 1.783
(0.95) (1.14) (0.37) (0.43) (0.30) (0.12) R14
RUEF; 30V
RUEF090 7.4 12.2 4.3 5.8 7.6 3.0 0.89 0.8 R10, R13, 0.183
(0.29) (0.48) (0.17) (0.23) (0.30) (0.12) (0.035) (0.03) R14
RUEF110 7.4 14.2 4.3 5.8 7.6 3.0 0.89 0.8 R10, R13, 0.204
(0.29) (0.56) (0.17) (0.23) (0.30) (0.12) (0.035) (0.03) R14
RUEF135 8.9 13.5 4.3 5.8 7.6 3.0 0.89 1. 0 R10, R13, 0.255
(0.35) (0.53) (0.17) (0.23) (0.30) (0.12) (0.035) (0.04) R14
RUEF160 8.9 15.2 4.3 5.8 7.6 3.0 0.89 1. 0 R10, R13, 0.289
(0.35) (0.60) (0.17) (0.23) (0.30) (0.12) (0.035) (0.04) R14
RUEF185 10.2 15.7 4.3 5.8 7.6 3.0 0.89 1. 0 R10, R13, 0.379
(0.40) (0.62) (0.17) (0.23) (0.30) (0.12) (0.035) (0.04) R14
RUEF250 11.4 18.3 4.3 5.8 7.6 3.0 0.89 1. 2 R10, R13, 0.493
(0.45) (0.72) (0.17) (0.23) (0.30) (0.12) (0.035) (0.05) R14
RUEF300 11.4 16.5 4.3 5.8 7.6 3.0 1. 19 1. 5 R11, R13, 0.516
(0.45) (0.65) (0.17) (0.23) (0.30) (0.12) (0.047) (0.06) R14
RUEF400 14.0 19.3 4.3 5.8 7.6 3.0 1. 19 1. 7 R11, R13, 0.670
(0.55) (0.76) (0.17) (0.23) (0.30) (0.12) (0.047) (0.07) R14
RUEF500 14.0 24.1 9.4 10.9 7.6 3.0 1. 19 1. 0 R11, R13, 0.926
(0.55) (0.95) (0.37) (0.43) (0.30) (0.12) (0.047) (0.04) R14
RUEF600 16.5 24.1 9.4 10.9 7.6 3.0 1. 19 1. 0 R11, R13, 1.352
(0.65) (0.95) (0.37) (0.43) (0.30) (0.12) (0.047) (0.04) R14
RUEF700 19.1 25.9 9.4 10.9 7.6 3.0 1. 19 1. 2 R11, R13, 1.543
(0.75) (1.02) (0.37) (0.43) (0.30) (0.12) (0.047) (0.05) R14
RUEF800 21.6 28.4 9.4 10.9 7.6 3.0 1. 19 1. 5 R11, R13, 1.852
(0.85) (1.12) (0.37) (0.43) (0.30) (0.12) (0.047) (0.06) R14
RUEF900 24.1 29.0 9.4 10.9 7.6 3.0 1. 19 1. 5 R11, R13, 2.104
(0.95) (1.14) (0.37) (0.43) (0.30) (0.12) (0.047) (0.06) R14
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
163
PolySwitch Resettable Devices
Radial-Leaded Devices
Figures R6-R14 — Dimension Figures (Cont’d)
Figure R12 Figure R13 Figure R14
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Table R4 — Dimensions and Weights
Part
Number
Dimensions in Millimeters (Inches)
Figure Device Mass (g)
(Only for Reference)
A B C D E F H J
Min Max Min Max Min Max Min Max Min Max Ty p Ty p Ty p
RXEF; 60V
RXEF005 8.0 8.3 4.3 5.8 7.6 3.0 1.07 1. 0 R7, R13, 0.069
(0.32) (0.33) (0.17) (0.23) (0.30) (0.12) (0.042) (0.04) R14
RXEF010 7.4 11.6 4.3 5.8 7.6 3.0 1.07 1. 0 R8, R13, 0.128
(0.29) (0.46) (0.17) (0.23) (0.30) (0.12) (0.042) (0.04) R14
RXEF017 7.4 12.7 4.3 5.8 7.6 3.0 1.68 1. 7 R8, R13, 0.174
(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.066) (0.07) R14
RXEF; 72V
RXEF020 7.4 11.7 4.3 5.8 7.6 3.0 1. 17 1. 0 R8, R13, 0.119
(0.29) (0.46) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04) R14
RXEF025 7.4 12.7 4.3 5.8 7.6 3.0 1. 17 1. 0 R8, R13, 0.130
(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04) R14
RXEF030 7.4 12.7 4.3 5.8 7.6 3.0 1. 17 1. 0 R8, R13, 0.143
(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04) R14
RXEF040 7.6 13.5 4.3 5.8 7.6 3.0 1. 17 1. 2 R8, R13, 0.202
(0.30) (0.53) (0.17) (0.23) (0.30) (0.12) (0.046) (0.05) R14
RXEF050 7.9 13.7 4.3 5.8 7.6 3.0 1. 17 1. 2 R8, R13, 0.210
(0.31) (0.54) (0.17) (0.23) (0.30) (0.12) (0.046) (0.05) R14
RXEF065 9.4 14.5 4.3 5.8 7.6 3.0 1. 17 1. 5 R8, R13, 0.277
(0.37) (0.57) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06) R14
RXEF075 10.2 15.2 4.3 5.8 7.6 3.0 1. 17 1. 5 R8, R13, 0.310
(0.40) (0.60) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06) R14
RXEF090 11.2 15.8 4.3 5.8 7.6 3.0 1. 17 1. 5 R8, R13, 0.365
(0.44) (0.62) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06) R14
RXEF110 12.8 17.5 4.3 5.8 7.6 3.0 1.37 1. 2 R9, R13, 0.546
(0.50) (0.69) (0.17) (0.23) (0.30) (0.12) (0.054) (0.05) R14
RXEF135 14.5 19.1 4.3 5.8 7.6 3.0 1.37 1. 2 R9, R13, 0.653
(0.57) (0.75) (0.17) (0.23) (0.30) (0.12) (0.054) (0.05) R14
RXEF160 16.3 20.8 4.3 5.8 7.6 3.0 1.37 1. 5 R9, R13, 0.684
(0.64) (0.82) (0.17) (0.23) (0.30) (0.12) (0.054) (0.06) R14
RXEF185 17.5 22.4 4.3 5.8 7.6 3.0 1.37 1. 5 R9, R13, 0.808
(0.69) (0.88) (0.17) (0.23) (0.30) (0.12) (0.054) (0.06) R14
RXEF250 20.8 25.4 9.4 10.9 7.6 3.0 1.37 1. 7 R9, R13, 1.139
(0.82) (1.00) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07) R14
RXEF300 23.9 28.6 9.4 10.9 7.6 3.0 1.37 1. 7 R9, R13, 1.379
(0.94) (1.13) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07) R14
RXEF375 27.2 31.8 9.4 10.9 7.6 3.0 1.37 1. 7 R9, R13, 1.708
(1.07) (1.25) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07) R14
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R4 — Dimensions and Weights (Cont’d)
Part
Number
Dimensions in Millimeters (Inches)
Figure Device Mass (g)
(Only for Reference)
A B C D E F H J
Min Max Min Max Min Max Min Max Min Max Ty p Ty p Ty p
RHEF; 16V - High Temperature
RHEF450 10.4 15.6 4.3 5.8 7. 6 3.0 1. 2 1.24 1. 6 R12, R13, 0.605
(0.41) (0.61) (0.17) (0.23) (0.30) (0.12) (0.05) (0.049) (0.06) R14
RHEF550 11. 2 18.9 4.3 5.8 7. 6 3.0 1. 2 R12, R13, 0.704
(0.44) (0.74) (0.17) (0.23) (0.30) (0.12) (0.05) R14
RHEF600 11. 2 21.0 4.3 5.8 7. 6 3.0 1. 2 1.24 1. 7 R12, R13, 0.792
(0.44) (0.83) (0.17) (0.23) (0.30) (0.12) (0.05) (0.049) (0.067) R14
RHEF650 12.7 22.2 4.3 5.8 7. 6 3.0 1. 2 1.24 1. 8 R12, R13, 0.952
(0.50) (0.88) (0.17) (0.23) (0.30) (0.12) (0.05) (0.049) (0.07) R14
RHEF700 14.0 21.9 4.3 5.8 7. 6 3.0 1. 2 R12, R13, 0.850
(0.55) (0.86) (0.17) (0.23) (0.30) (0.12) (0.05) R14
RHEF750 14.0 23.5 4.3 5.8 7. 6 3.0 1. 2 1.24 2.0 R12, R13, 1.054
(0.55) (0.93) (0.17) (0.23) (0.30) (0.12) (0.05) (0.049) (0.08) R14
RHEF800 16.5 22.5 4.3 5.8 7. 6 3.0 1. 2 R12, R13, 1.073
(0.65) (0.88) (0.17) (0.23) (0.30) (0.12) (0.05) R14
RHEF900 16.5 25.7 4.3 5.8 7. 6 3.0 1. 2 R12, R13, 1.516
(0.65) (1.01) (0.17) (0.23) (0.30) (0.12) (0.05) R14
RHEF1000 1 7. 5 26.5 9.4 10.9 7. 6 3.0 1. 2 1.24 1. 5 R12, R13, 1.791
(0.69) (1.04) (0.37) (0.43) (0.30) (0.12) (0.05) (0.049) (0.06) R14
RHEF1100 21.0 26.1 9.4 10.9 7. 6 3.0 1. 2 R12, R13, 1.570
(0.83) (1.03) (0.37) (0.43) (0.30) (0.12) (0.05) R14
RHEF1300 23.5 28.7 9.4 10.9 7. 6 3.6 1. 4 1.45 1. 9 R12, R13, 2.257
(0.925) (1.13) (0.37) (0.43) (0.30) (0.14) (0.06) (0.057) (0.084) R14
RHEF1400 23.5 28.6 9.4 10.9 7. 6 3.6 1. 4 R12, R13, 2.051
(0.925) (1.13) (0.37) (0.43) (0.30) (0.14) (0.06) R14
RHEF1500 23.5 28.7 9.4 10.9 7. 6 3.6 1. 4 1.45 1. 9 R12, R13, 2.257
(0.925) (1.13) (0.37) (0.43) (0.30) (0.14) (0.06) (0.057) (0.084) R14
RUSBF; 6V
RUSBF075 6.9 11. 4 4.3 5.9 7. 6 3.1 0.91 1. 0 R8, R13, 0.123
(0.27) (0.45) (0.17) (0.23) (0.30) (0.12) (0.036) (0.04) R14
RUSBF120 6.9 11. 7 4.3 5.9 7. 6 3.1 0.91 1. 0 R8, R13, 0.111
(0.27) (0.46) (0.17) (0.23) (0.30) (0.12) (0.036) (0.04) R14
RUSBF155 6.9 11. 7 4.3 5.9 7. 6 3.1 0.91 1. 0 R8, R13, 0.135
(0.27) (0.46) (0.17) (0.23) (0.30) (0.12) (0.036) (0.04) R14
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
165
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R4 — Dimensions and Weights (Cont’d)
Part
Number
Dimensions in Millimeters (Inches)
Figure Device Mass (g)
(Only for Reference)
A B C D E F H J
Min Max Min Max Min Max Min Max Min Max Ty p Ty p Ty p
RHEF; 30V - High Temperature
RHEF050 7. 4 12.7 4.3 5.8 7. 6 3.0 1. 2 R8, R13, 0.177
(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.05) R14
RHEF070 6.9 10.8 4.3 5.8 7. 6 3.0 1. 2 1.24 1. 2 R10, R13, 0.259
(0.27) (0.43) (0.17) (0.23) (0.30) (0.12) (0.05) (0.049) (0.05) R14
RHEF100 9.7 13.6 4.3 5.8 7. 6 3.0 ———R8, R13, 0.312
(0.38) (0.54) (0.17) (0.23) (0.30) (0.12) R14
RUSBF; 16V
RUSBF090 7. 4 12.2 4.3 5.8 7. 6 3.1 0.89 0.8 R10, R13, 0.183
(0.29) (0.48) (0.17) (0.23) (0.30) (0.12) (0.035) (0.03) R14
RUSBF110 7. 4 14.2 4.3 5.8 7. 6 3.0 0.89 0.8 R10, R13, 0.204
(0.29) (0.56) (0.17) (0.23) (0.30) (0.12) (0.035) (0.03) R14
RUSBF135 8.9 13.5 4.3 5.8 7. 6 3.0 0.89 1. 0 R10, R13, 0.240
(0.35) (0.53) (0.17) (0.23) (0.30) (0.12) (0.035) (0.04) R14
RUSBF160 8.9 15.2 4.3 5.8 7. 6 3.0 0.89 1. 0 R10, R13, 0.300
(0.35) (0.60) (0.17) (0.23) (0.30) (0.12) (0.035) (0.04) R14
RUSBF185 10.2 15.7 4.3 5.8 7. 6 3.0 0.89 1. 0 R10, R13, 0.368
(0.40) (0.62) (0.17) (0.23) (0.30) (0.12) (0.035) (0.04) R14
RUSBF250 11. 4 18.3 4.3 5.8 7. 6 3.0 0.89 1. 2 R10, R13, 0.467
(0.45) (0.72) (0.17) (0.23) (0.30) (0.12) (0.035) (0.05) R14
RGEF; 16V
RGEF250 8.9 12.8 4.3 5.8 3.18 6.18 3.0 1. 2 1.24 1. 2 R10, R13, 0.277
(0.35) (0.50) (0.17) (0.23) (0.13) (0.24) (0.12) (0.05) (0.049) (0.05) R14
RGEF300 6.1 7. 1 6.1 11. 0 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 1. 2 R11, R13, 0.323
(0.24) (0.28) (0.24) (0.43) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.05) R14
RGEF400 7. 9 8.9 7. 9 12.8 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 1. 4 R11, R13, 0.417
(0.31) (0.35) (0.31) (0.50) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.06) R14
RGEF500 9.4 10.4 9.4 14.3 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 1. 6 R11, R13, 0.540
(0.37) (0.41) (0.37) (0.56) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.06) R14
RGEF600 9.7 10.7 12.2 1 7. 1 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 1. 6 R11, R13, 0.604
(0.38) (0.42) (0.48) (0.67) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.06) R14
RGEF700 10.2 11. 2 14.7 19.7 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 1. 7 R11, R13, 0.701
(0.40) (0.44) (0.58) (0.78) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.07) R14
RGEF800 11. 7 12.7 16.0 20.9 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 1. 8 R11, R13, 0.829
(0.46) (0.50) (0.63) (0.82) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.07) R14
RGEF900 13.0 14.0 16.8 21.7 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 2.0 R11, R13, 0.887
(0.51) (0.55) (0.66) (0.85) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.08) R14
RGEF1000 16.5 21.1 25.2 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 2.0 R11, R13, 1.219
(0.65) (0.83) (0.99) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.08) R14
RGEF1100 16.5 1 7. 5 21.1 26.0 4.3 5.8 7. 6 2.0 3.0 1. 2 1.24 2.4 R11, R13, 1.408
(0.65) (0.69) (0.83) (1.02) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.09) R14
RGEF1200 16.4 1 7. 5 22.6 28.0 9.4 10.9 7. 6 2.3 3.5 1. 4 1.45 1. 5 R11, R13, 1.650
(0.65) (0.69) (0.89) (1.10) (0.37) (0.43) (0.30) (0.09) (0.14) (0.06) (0.057) (0.06) R14
RGEF1400 23.5 22.6 27.9 9.4 10.9 7. 6 2.3 3.5 1. 4 1.45 1. 9 R11, R13, 2.146
(0.925) (0.89) (1.10) (0.37) (0.43) (0.30) (0.09) (0.14) (0.06) (0.057) (0.08) R14
RHEF; 16V - High Temperature
RHEF200 9.4 14.4 4.3 5.8 7. 6 3.1 ———R8, R13, 0.278
(0.37) (0.57) (0.17) (0.23) (0.30) (0.12) R14
RHEF300 8.8 13.8 4.3 5.8 7. 6 3.0 1. 2 R12, R13, 0.433
(0.35) (0.55) (0.17) (0.23) (0.30) (0.12) (0.05) R14
RHEF400 10.0 15.0 4.3 5.8 7. 6 3.0 1. 2 1.24 1. 6 R12, R13, 0.509
(0.39) (0.59) (0.17) (0.23) (0.30) (0.12) (0.05) (0.049) (0.06) R14
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
RXEF
A = RXEF005
B = RXEF010
C = RXEF017
D = RXEF020
E = RXEF025
F = RXEF030
G = RXEF040
H = RXEF050
I = RXEF065
J = RXEF075
K = RXEF090
L = RXEF110
M = RXEF135
N = RXEF160
O = RXEF185
P = RXEF250
Q = RXEF300
R = RXEF375
RUEF
A = RUEF090
B = RUEF110
C = RUEF135
D = RUEF160
E = RUEF185
F = RUEF250
G = RUEF300
H = RUEF400
I = RUEF500
J = RUEF600
K = RUEF700
L = RUEF800
M = RUEF900
RKEF
A = RKEF050
B = RKEF065
C = RKEF075
D = RKEF090
E = RKEF110
F = RKEF135
G = RKEF160
H = RKEF185
I = RKEF250
J = RKEF300
K = RKEF375
L = RKEF400
M = RKEF500
Figures R15-R20 — Typical Time-to-Trip Curves at 20°C
Figure R15
Figure R16
Figure R17
Time-to-Trip (s)
Fault Current (A)
1000
100
10
1
0.1
0.01
0.001
0.1 101100
A
A
BCDEFG
BCDEFGH
H
I
J
K
L
M
N
O
P
Q
R
IJKLMNOPQR
Time-to-Trip (s)
Fault Current (A)
100
10
1
0.1
0.01
101100
C
C
B
B
A
A
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
Time-to-Trip (s)
Fault Current (A)
100
10
1
0.1
0.01
11
01
00
A
ABC
D
E
F
G
H
I
J
K
L
M
BCDE FG
HIJKLM
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
167
PolySwitch Resettable Devices
Radial-Leaded Devices
A = RGEF250
B = RGEF300
C = RGEF400
D = RGEF500
E = RGEF600
F = RGEF700
G = RGEF800
H = RGEF900
I = RGEF1000
J = RGEF1100
K = RGEF1200
L = RGEF140
RUSBF
A = RUSBF075
B = RUSBF090
C = RUSBF110
D = RUSBF120
E = RUSBF135
F = RUSBF155
G = RUSBF160
H = RUSBF185
I = RUSBF250
RHEF (data at 25°C)
A = RHEF050
B = RHEF070
C = RHEF100
D = RHEF200
E = RHEF300
F = RHEF400
G = RHEF450
H = RHEF550
I = RHEF600
J = RHEF650
K = RHEF700
L = RHEF750
M = RHEF800
N = RHEF900
O = RHEF1000
P = RHEF1100
Q = RHEF1300
R = RHEF1400
S = RHEF1500
Figures R15-R20 — Typical Time-to-Trip Curves at 20°C (Cont’d)
Figure R18
Figure R19
Figure R20
Time-to-Trip (s)
Fault Current (A)
1000
100
10
1
0.1
0.01
0.001
11
01
00
A
A
B
B
C
D
E
F
G
H
I
J
K
L
CD EFGH IJKL
Time-to-Trip (s)
Fault Current (A)
1000
100
10
1
0.1
0.01
11
01
00
AB
CD
EF
G
H
I
J
K
L
M
N
O
PQ
R
S
B
CDEFGHIJKLMNOP QRS
A
Time-to-Trip (s)
Fault Current (A)
100
10
1
0.1
0.01
0.001
101100
A
AB
C
D
E
F
G
H
I
B
CDEFGH I
RGEF (data at 25°C)
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
RXEF
Physical Characteristics
Lead Material RXEF005 : Tin-plated Nickel-copper Alloy, 0.128mm2 (26AWG), ø0.40mm (0.016in)
RXEF010 : Tin-plated Nickel-copper Alloy, 0.205mm2 (24AWG), ø0.51mm (0.020in)
RXEF017 to 040 : Tin-plated Copper-clad Steel, 0.205mm2 (24AWG), ø0.51mm (0.020in)
RXEF050 to 090 : Tin-plated Copper, 0.205mm2 (24AWG), ø0.51mm (0.020in)
RXEF110 to 375 : Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm (0.032in)
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3
RXEF005, RXEF010 Meet ANSI/J-STD-002 Category 1
Solder Heat Withstand RXEF005- RXEF025: per IEC-STD 68-2-20, Test Tb, Method 1a, Condition a;
Can Withstand 5s at 260°C ±5°C
All Other Sizes : per IEC-STD 68-2-20, Test Tb, Method 1a, Condition b;
Can Withstand 10s at 260°C ±5°C
Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0
Operation Temperature -40°C~85°C
Note: Devices are not designed to be placed through a reflow process.
Environmental Specifications
Test Conditions Resistance Change
Passive Aging -40°C, 1000 hrs ±5%
85°C, 1000 hrs ±5%
Humidity Aging 85°C, 85%RH, 1000 hrs ±10%
Thermal Shock 85°C, -40°C (10 Times) ±10%
Solvent Resistance MIL-STD-202, Method 215F No Change
RKEF
Physical Characteristics
Lead Material RKEF050 to 090 : Tin-plated Copper, 0.205mm2 (24AWG), ø0.51mm (0.020in)
RKEF110 to 500 : Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm (0.032in)
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3
Solder Heat Withstand RKEF050-RKEF185: per IEC-STD 68-2-20, Test Tb, Method 1a, Condition a;
Can Withstand 5s at 260°C ±5°C
All Other Sizes : per IEC-STD 68-2-20, Test Tb, Method 1a, Condition b;
RKEF Can Withstand 10s at 260°C ±5°C
Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0
Operation Temperature -40°C~85°C
Note: Devices are not designed to be placed through a reflow process.
Environmental Specifications
Test Conditions Resistance Change
Passive Aging -40°C, 1000 hrs ±5%
85°C, 1000 hrs ±5%
Humidity Aging 85°C, 85%RH, 1000 hrs ±10%
Thermal Shock 85°C, -40°C (10 Times) ±10%
Solvent Resistance MIL-STD-202, Method 215F No Change
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
169
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R5 — Physical Characteristics and Environmental Specifications
Table R5 — Physical Characteristics and Environmental Specifications (Cont’d)
RUEF
Physical Characteristics
Lead Material RUEF090 to RUEF250: Tin-plated Copper-clad Steel, 0.205mm2 (24AWG)
RUEF300 to RUEF900: Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm (0.032in)
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3
Solder Heat Withstand per IEC-STD 68-2-20, Test Tb, Method1A, Condition B, Can Withstand 10s at 260°C ±5°C
Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0
Operation Temperature -40°C~85°C
Note: Devices are not designed to be placed through a reflow process.
Environmental Specifications
Test Conditions Resistance Change
Passive Aging 70°C, 1000 hrs ±5%
85°C, 1000 hrs ±5%
Humidity Aging 85°C, 85%RH, 1000 hrs ±5%
Thermal Shock 85°C, -40°C (10 times) ±5%
Solvent Resistance MIL-STD-202, Method 215F No Change
RUSBF
Physical Characteristics
Lead Material RUSBF075 : Tin-plated Nickel-copper Alloy, 0.205mm2 (24AWG), ø0.51mm/0.020in
RUSBF090 to RUSBF250: Tin-plated Copper-clad Steel, 0.205mm2 (24AWG), ø0.51mm/0.020in
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3 Except
RUSBF075 Meet ANSI/J-STD-002 Category 1
Solder Heat Withstand RUSBF120: per IEC-STD 68-2-20, Test Tb, Method 1A, Condition A; Can Withstand 5s at 260°C ±5°C
All Others : per IEC-STD 68-2-20, Test Tb, Method 1A, Condition B; Can Withstand 10s at 260°C ±5°C
Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0
Operation Temperature -40°C~85°C
Note: Devices are not designed to be placed through a reflow process.
Environmental Specifications
Test Conditions Resistance Change
Passive Aging 70°C, 1000 hrs ±5%
85°C, 1000 hrs ±5%
Humidity Aging 85°C, 85%RH, 1000 hrs ±5%
Thermal Shock 85°C, -40°C (10 Times) ±5%
Solvent Resistance MIL-STD-202, Method 215F No change
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R5 — Physical Characteristics and Environmental Specifications (Cont’d)
RGEF
Physical Characteristics
Lead Material RGEF250 : Tin-plated Copper-clad Steel, 0.205mm2 (24AWG), ø0.51mm/0.020in
RGEF300 to RGEF1100 : Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm/0.032in
RGEF1200 to RGEF1400: Tin-plated Copper, 0.82mm2 (18AWG), ø1.0mm/0.04in
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3
Solder Heat Withstand RGEF250 and RGEF400 : per IEC 68-2-20, Test Tb, Method 1a, Condition a;
can withstand 5s at 260°C ±5°C
RGEF500 to RGEF1400 : per IEC 68-2-20, Test Tb, Method 1a, Condition b;
can withstand 10s at 260°C ±5°C
Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0
Operation Temperature -40°C~85°C
Note: Devices are not designed to be placed through a reflow process.
Environmental Specifications
Test Conditions Resistance Change
Passive Aging -40°C, 1000 hrs ±5%
85°C, 1000 hrs ±5%
Humidity Aging 85°C, 85%RH, 1000 hrs ±5%
Thermal Shock 85°C, -40°C (10 Times) ±5%
Solvent Resistance MIL-STD-202, Method 215F No Change
RHEF
Physical Characteristics
Lead Material RHEF050 to RHEF200 : Tin-plated Copper-clad Steel, 0.205mm2 (24AWG), ø0.51mm/0.020in
RHEF300 to RHEF1100 : Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm/0.032in
RHEF1300 to RHEF1500: Tin-plated Copper, 0.82mm2 (18AWG), ø1.0mm/0.04in
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3
Solder Heat Withstand per IEC 68-2-20, Test Tb, Method 1A, Condition B; Can Wthstand 10s at 260°C ±5°C
Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0
Operation Temperature -40°C~125°C
Note: Devices are not designed to be placed through a reflow process.
Environmental Specifications
Test Conditions Resistance Change
Passive Aging 70°C, 1000 hrs ±5%
85°C, 1000 hrs ±5%
Humidity Aging 85°C, 85%RH, 1000 hrs ±5%
Thermal Shock 125°C, -40°C (10 Times) ±5%
Solvent Resistance MIL-STD-202, Method 215F No Change
Storage Conditions
Storage Conditions 40°C max, 70% RH max; devices should remain in original sealed bags prior to use.
Devices may not meet specified values if these storage conditions are exceeded.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
171
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R6 — Packaging and Marking Information
Part Number Bag Quantity Tape and Reel
Quantity
Ammo Pack
Quantity
Standard Package
Quantity Part Marking Agency Recognition
RXEF 60V
RXEF005 500 10,000 UL, CSA, TÜV, CQC
RXEF005-2 3,000 15,000 UL, CSA, TÜV, CQC
RXEF005-AP 2,000 10,000 UL, CSA, TÜV, CQC
RXEF010 500 10,000 X10 UL, CSA, TÜV, CQC
RXEF010-2 3,000 15,000 X10 UL, CSA, TÜV, CQC
RXEF010-AP 2,000 10,000 X10 UL, CSA, TÜV, CQC
RXEF017 500 10,000 X17 UL, CSA, TÜV, CQC
RXEF017-2 2,500 12,500 X17 UL, CSA, TÜV, CQC
RXEF017-AP 2,000 10,000 X17 UL, CSA, TÜV, CQC
RXEF 72V
RXEF020 500 10,000 X20 UL, CSA, TÜV, CQC
RXEF020-2 3,000 15,000 X20 UL, CSA, TÜV, CQC
RXEF020-AP 2,000 10,000 X20 UL, CSA, TÜV, CQC
RXEF025 500 10,000 X25 UL, CSA, TÜV, CQC
RXEF025-2 3,000 15,000 X25 UL, CSA, TÜV, CQC
RXEF025-AP 2,000 10,000 X25 UL, CSA, TÜV, CQC
RXEF030 500 10,000 X30 UL, CSA, TÜV, CQC
RXEF030-2 3,000 15,000 X30 UL, CSA, TÜV, CQC
RXEF030-AP 2,000 10,000 X30 UL, CSA, TÜV, CQC
RXEF040 500 10,000 X40 UL, CSA, TÜV, CQC
RXEF040-2 3,000 15,000 X40 UL, CSA, TÜV, CQC
RXEF040-AP 2,000 10,000 X40 UL, CSA, TÜV, CQC
RXEF050 500 10,000 X50 UL, CSA, TÜV, CQC
RXEF050-2 3,000 15,000 X50 UL, CSA, TÜV, CQC
RXEF050-AP 2,000 10,000 X50 UL, CSA, TÜV, CQC
RXEF065 500 10,000 X65 UL, CSA, TÜV, CQC
RXEF065-2 3,000 15,000 X65 UL, CSA, TÜV, CQC
RXEF065-AP 2,000 10,000 X65 UL, CSA, TÜV, CQC
RXEF075 500 10,000 X75 UL, CSA, TÜV, CQC
RXEF075-2 3,000 15,000 X75 UL, CSA, TÜV, CQC
RXEF075-AP 2,000 10,000 X75 UL, CSA, TÜV, CQC
RXEF090 500 10,000 X90 UL, CSA, TÜV, CQC
RXEF090-2 3,000 15,000 X90 UL, CSA, TÜV, CQC
RXEF090-AP 2,000 10,000 X90 UL, CSA, TÜV, CQC
RXEF110 500 10,000 X110 UL, CSA, TÜV, CQC
RXEF110-2 1,500 7,500 X110 UL, CSA, TÜV, CQC
RXEF110-AP 1,000 5,000 X110 UL, CSA, TÜV, CQC
RXEF135 500 10,000 X135 UL, CSA, TÜV, CQC
RXEF135-2 1,500 7,500 X135 UL, CSA, TÜV, CQC
RXEF135-AP 1,000 5,000 X135 UL, CSA, TÜV, CQC
RXEF160 500 10,000 X160 UL, CSA, TÜV, CQC
RXEF160-2 1,500 7,500 X160 UL, CSA, TÜV, CQC
RXEF160-AP 1,000 5,000 X160 UL, CSA, TÜV, CQC
RXEF185 500 10,000 X185 UL, CSA, TÜV, CQC
RXEF185-2 1,500 7,500 X185 UL, CSA, TÜV, CQC
RXEF185-AP 1,000 5,000 X185 UL, CSA, TÜV, CQC
RXEF250 250 5,000 X250 UL, CSA, TÜV, CQC
RXEF250-2 1,000 5,000 X250 UL, CSA, TÜV, CQC
RXEF250-AP 1,000 5,000 X250 UL, CSA, TÜV, CQC
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R6 — Packaging and Marking Information (Cont’d)
Part Number Bag Quantity Tape and Reel Quantity Ammo Pack Quantity Standard Package
Quantity Part Marking Agency Recognition
RXEF
72V
RXEF300 250 5,000 X300 UL, CSA, TÜV, CQC
RXEF300-2 1,000 5,000 X300 UL, CSA, TÜV, CQC
RXEF300-AP 1,000 5,000 X300 UL, CSA, TÜV, CQC
RXEF375 250 5,000 X375 UL, CSA, TÜV, CQC
RKEF
60V
RKEF050 500 10,000 K50 UL, CSA, TÜV
RKEF065 500 10,000 K65 UL, CSA, TÜV
RKEF075 500 10,000 K75 UL, CSA, TÜV
RKEF090 500 10,000 K90 UL, CSA, TÜV
RKEF110 500 10,000 K110 UL, CSA, TÜV
RKEF135 500 10,000 K135 UL, CSA, TÜV
RKEF160 500 10,000 K160 UL, CSA, TÜV
RKEF185 500 10,000 K185 UL, CSA, TÜV
RKEF250 500 10,000 K250 UL, CSA, TÜV
RKEF300 250 5,000 K300 UL, CSA, TÜV
RKEF375 250 5,000 K375 UL, CSA, TÜV
RKEF400 250 5,000 K400 UL, CSA, TÜV
RKEF500 250 5,000 K500 UL, CSA, TÜV
RUEF
30V
RUEF090 500 10,000 U90 UL, CSA, TÜV, CQC
RUEF090-2 3,000 15,000 U90 UL, CSA, TÜV, CQC
RUEF090-AP 2,000 10,000 U90 UL, CSA, TÜV, CQC
RUEF110 500 10,000 U110 UL, CSA, TÜV, CQC
RUEF110-2 3,000 15,000 U110 UL, CSA, TÜV, CQC
RUEF110-AP 2,000 10,000 U110 UL, CSA, TÜV, CQC
RUEF135 500 10,000 U135 UL, CSA, TÜV, CQC
RUEF135-2 3,000 15,000 U135 UL, CSA, TÜV, CQC
RUEF135-AP 2,000 10,000 U135 UL, CSA, TÜV, CQC
RUEF160 500 10,000 U160 UL, CSA, TÜV, CQC
RUEF160-2 3,000 15,000 U160 UL, CSA, TÜV, CQC
RUEF160-AP 2,000 10,000 U160 UL, CSA, TÜV, CQC
RUEF185 500 10,000 U185 UL, CSA, TÜV, CQC
RUEF185-2 3,000 15,000 U185 UL, CSA, TÜV, CQC
RUEF185-AP 2,000 10,000 U185 UL, CSA, TÜV, CQC
RUEF250 500 10,000 U250 UL, CSA, TÜV, CQC
RUEF250-2 3,000 15,000 U250 UL, CSA, TÜV, CQC
RUEF250-AP 2,000 10,000 U250 UL, CSA, TÜV, CQC
RUEF300 500 10,000 U300 UL, CSA, TÜV, CQC
RUEF300-2 2,500 12,500 U300 UL, CSA, TÜV, CQC
RUEF300-AP 1,000 5,000 U300 UL, CSA, TÜV, CQC
RUEF400 500 10,000 U400 UL, CSA, TÜV, CQC
RUEF400-2 1,500 7,500 U400 UL, CSA, TÜV, CQC
RUEF400-AP 1,000 5,000 U400 UL, CSA, TÜV, CQC
RUEF500 250 5,000 U500 UL, CSA, TÜV, CQC
RUEF500-2 1,500 7,500 U500 UL, CSA, TÜV, CQC
RUEF500-AP 1,000 5,000 U500 UL, CSA, TÜV, CQC
RUEF600 250 5,000 U600 UL, CSA, TÜV, CQC
RUEF600-2 1,000 5,000 U600 UL, CSA, TÜV, CQC
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
173
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R6 — Packaging and Marking Information (Cont’d)
Part Number Bag Quantity Tape and Reel Quantity Ammo Pack Quantity Standard Package
Quantity Part Marking Agency Recognition
RUEF
30V
RUEF600-AP 1,000 5,000 U600 UL, CSA, TÜV, CQC
RUEF700 250 5,000 U700 UL, CSA, TÜV, CQC
RUEF700-2 1,000 5,000 U700 UL, CSA, TÜV, CQC
RUEF700-AP 1,000 5,000 U700 UL, CSA, TÜV, CQC
RUEF800 250 5,000 U800 UL, CSA, TÜV, CQC
RUEF800-2 1,000 5,000 U800 UL, CSA, TÜV, CQC
RUEF800-AP 1,000 5,000 U800 UL, CSA, TÜV, CQC
RUEF900 250 5,000 U900 UL, CSA, TÜV, CQC
RUEF900-2 1,000 4,000 U900 UL, CSA, TÜV, CQC
RUEF900-AP 1,000 4,000 U900 UL, CSA, TÜV, CQC
RHEF
30V - High Temperature
RHEF050 500 10,000 H0.5 UL, CSA, TÜV
RHEF050-2 2,500 12,500 H0.5 UL, CSA, TÜV
RHEF070 500 10,000 H0.7 UL, CSA, TÜV
RHEF070-2 2,500 12,500 H0.7 UL, CSA, TÜV
RHEF100 500 10,000 H1 UL, CSA, TÜV
RHEF100-2 2,500 12,500 H1 UL, CSA, TÜV
RUSBF
16V
RUSBF090 500 10,000 R90 UL, CSA, TÜV
RUSBF090-2 3,000 15,000 R90 UL, CSA, TÜV
RUSBF090-AP 2,000 10,000 R90 UL, CSA, TÜV
RUSBF110 500 10,000 R110 UL, CSA, TÜV
RUSBF110-2 3,000 15,000 R110 UL, CSA, TÜV
RUSBF110-AP 2,000 10,000 R110 UL, CSA, TÜV
RUSBF135 500 10,000 R135 UL, CSA, TÜV
RUSBF135-2 3,000 15,000 R135 UL, CSA, TÜV
RUSBF135-AP 2,000 10,000 R135 UL, CSA, TÜV
RUSBF160 500 10,000 R160 UL, CSA, TÜV
RUSBF160-2 3,000 15,000 R160 UL, CSA, TÜV
RUSBF160-AP 2,000 10,000 R160 UL, CSA, TÜV
RUSBF185 500 10,000 R185 UL, CSA, TÜV
RUSBF185-2 3,000 15,000 R185 UL, CSA, TÜV
RUSBF185-AP 2,000 10,000 R185 UL, CSA, TÜV
RUSBF250 500 10,000 R250 UL, CSA, TÜV
RUSBF250-2 3,000 15,000 R250 UL, CSA, TÜV
RUSBF250-AP 2,000 10,000 R250 UL, CSA, TÜV
RGEF
16V
RGEF250 500 10,000 G2.5 UL, CSA, TÜV
RGEF250-2 3,000 15,000 G2.5 UL, CSA, TÜV
RGEF250-AP 2,000 10,000 G2.5 UL, CSA, TÜV
RGEF300 500 10,000 G3 UL, CSA, TÜV
RGEF300-2 2,500 12,500 G3 UL, CSA, TÜV
RGEF300-AP 2,000 10,000 G3 UL, CSA, TÜV
RGEF400 500 10,000 G4 UL, CSA, TÜV
RGEF400-2 2,500 12,500 G4 UL, CSA, TÜV
RGEF400-AP 2,000 10,000 G4 UL, CSA, TÜV
RGEF500 500 10,000 G5 UL, CSA, TÜV
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R6 — Packaging and Marking Information (Cont’d)
Part Number Bag Quantity Tape and Reel Quantity Ammo Pack Quantity Standard Package
Quantity Part Marking Agency Recognition
RGEF
16V
RGEF500-2 2,000 10,000 G5 UL, CSA, TÜV
RGEF500-AP 2,000 10,000 G5 UL, CSA, TÜV
RGEF600 500 10,000 G6 UL, CSA, TÜV
RGEF600-2 2,000 10,000 G6 UL, CSA, TÜV
RGEF600-AP 2,000 10,000 G6 UL, CSA, TÜV
RGEF700 500 10,000 G7 UL, CSA, TÜV
RGEF700-2 1,500 7,500 G7 UL, CSA, TÜV
RGEF700-AP 1,500 7,500 G7 UL, CSA, TÜV
RGEF800 500 10,000 G8 UL, CSA, TÜV
RGEF800-2 1,500 7,500 G8 UL, CSA, TÜV
RGEF800-AP 1,500 7,500 G8 UL, CSA, TÜV
RGEF900 500 10,000 G9 UL, CSA, TÜV
RGEF900-2 1,000 5,000 G9 UL, CSA, TÜV
RGEF900-AP 1,000 5,000 G9 UL, CSA, TÜV
RGEF1000 250 5,000 G10 UL, CSA, TÜV
RGEF1000-2 1,000 5,000 G10 UL, CSA, TÜV
RGEF1000-AP 1,000 5,000 G10 UL, CSA, TÜV
RGEF1100 250 5,000 G11 UL, CSA, TÜV
RGEF1100-2 1,000 5,000 G11 UL, CSA, TÜV
RGEF1100-AP 1,000 5,000 G 11 UL, CSA, TÜV
RGEF1200 250 5,000 G12 UL, CSA, TÜV
RGEF1200-2 1,000 5,000 G12 UL, CSA, TÜV
RGEF1200-AP 1,000 5,000 G12 UL, CSA, TÜV
RGEF1400 250 5,000 G14 UL, CSA, TÜV
RGEF1400-2 1,000 5,000 G14 UL, CSA, TÜV
RGEF1400-AP 1,000 5,000 G14 UL, CSA, TÜV
RHEF
16V - High Temperature
RHEF200 500 10,000 H2 UL, CSA, TÜV
RHEF200-2 2,500 12,500 H2 UL, CSA, TÜV
RHEF200-AP 2,500 12,500 H2 UL, CSA, TÜV
RHEF300 500 10,000 H3 UL, CSA, TÜV
RHEF300-2 2,000 10,000 H3 UL, CSA, TÜV
RHEF300-AP 2,000 10,000 H3 UL, CSA, TÜV
RHEF400 500 10,000 H4 UL, CSA, TÜV
RHEF400-2 1,500 7,500 H4 UL, CSA, TÜV
RHEF400-AP 1,500 7,500 H4 UL, CSA, TÜV
RHEF450 500 10,000 H4.5 UL, CSA, TÜV
RHEF450-2 1,500 7,500 H4.5 UL, CSA, TÜV
RHEF450-AP 1,500 7,500 H4.5 UL, CSA, TÜV
RHEF550 500 10,000 H5.5 UL, CSA, TÜV
RHEF550-2 2,000 10,000 H5.5 UL, CSA, TÜV
RHEF550-AP 2,000 10,000 H5.5 UL, CSA, TÜV
RHEF600 500 10,000 H6 UL, CSA, TÜV
RHEF600-2 2,000 10,000 H6 UL, CSA, TÜV
RHEF600-AP 2,000 10,000 H6 UL, CSA, TÜV
RHEF650 500 10,000 H6.5 UL, CSA, TÜV
RHEF650-2 1,500 7,500 H6.5 UL, CSA, TÜV
RHEF650-AP 1,500 7,500 H6.5 UL, CSA, TÜV
RHEF700 500 10,000 H7 UL, CSA, TÜV
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
175
PolySwitch Resettable Devices
Radial-Leaded Devices
Agency Recognitions
UL File # E74889
CSA File # CA78165
TÜV Certificate number available on request (per IEC 60730-1).
Table R6 — Packaging and Marking Information (Cont’d)
Part Number Bag Quantity Tape and Reel Quantity Ammo Pack Quantity Standard Package
Quantity Part Marking Agency Recognition
RHEF
16V - High Temperature
RHEF700-2 1,500 7,500 H7 UL, CSA, TÜV
RHEF700-AP 1,500 7,500 H7 UL, CSA, TÜV
RHEF750 500 10,000 H7.5 UL, CSA, TÜV
RHEF750-2 1,000 5,000 H7.5 UL, CSA, TÜV
RHEF750-AP 1,000 5,000 H7.5 UL, CSA, TÜV
RHEF800 500 10,000 H8 UL, CSA, TÜV
RHEF800-2 1,000 5,000 H8 UL, CSA, TÜV
RHEF800-AP 1,000 5,000 H8 UL, CSA, TÜV
RHEF900 250 5,000 H9 UL, CSA, TÜV
RHEF900-2 1,000 5,000 H9 UL, CSA, TÜV
RHEF900-AP 1,000 5,000 H9 UL, CSA, TÜV
RHEF1000 250 5,000 H10 UL, CSA, TÜV
RHEF1000-2 1,000 5,000 H10 UL, CSA, TÜV
RHEF1000-AP 1,000 5,000 H10 UL, CSA, TÜV
RHEF1100 250 5,000 H11 UL, CSA, TÜV
RHEF1100-2 1,000 5,000 H11 UL, CSA, TÜV
RHEF1100-AP 1,000 5,000 H11 UL, CSA, TÜV
RHEF1300 250 5,000 H13 UL, CSA, TÜV
RHEF1300-2 1,000 5,000 H13 UL, CSA, TÜV
RHEF1300-AP 1,000 5,000 H13 UL, CSA, TÜV
RHEF1400 250 5,000 H14 UL, CSA, TÜV
RHEF1400-2 1,000 5,000 H14 UL, CSA, TÜV
RHEF1400-AP 1,000 5,000 H14 UL, CSA, TÜV
RHEF1500 250 5,000 H15 UL, CSA, TÜV
RHEF1500-2 1,000 5,000 H15 UL, CSA, TÜV
RHEF1500-AP 1,000 5,000 H15 UL, CSA, TÜV
RUSBF
6V
RUSBF075 500 10,000 R75 UL, CSA, TÜV
RUSBF075-2 3,000 15,000 R75 UL, CSA, TÜV
RUSBF075-AP 2,000 10,000 R75 UL, CSA, TÜV
RUSBF120 500 10,000 R120 UL, CSA, TÜV
RUSBF120-2 3,000 15,000 R120 UL, CSA, TÜV
RUSBF120-AP 2,000 10,000 R120 UL, CSA, TÜV
RUSBF155 500 10,000 R155 UL, CSA, TÜV
RUSBF155-2 3,000 15,000 R155 UL, CSA, TÜV
RUSBF155-AP 2,000 10,000 R155 UL, CSA, TÜV
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R7 — Tape and Reel Specifications
RXEF and RKEF devices are available in tape and reel packaging per EIA468-B/IEC60286-2 standards.
Description EIA Mark Dimension (mm) Tolerance
Carrier Tape Width W18 -0.5/+1.0
Hold-Down Tape Width W411 Minimum
Top Distance between Tape Edges W63Maximum
Sprocket Hole Position W59-0.5/+0.75
Sprocket Hole Diameter D04± 0.2
Abscissa to Plane (Straight Lead) (RXEF110 To RXEF300, RKEF135 To RKEF500) H18.5 ± 2.5
Abscissa to Plane (Kinked Lead) (RXEF010 To RXEF090, RKEF050 To RKEF110) H016.0 ± 0.5
Abscissa to Top (RXEF010 To RXEF090, RKEF050 To RKEF185) H132.2 Maximum
Abscissa to Top* (RXEF110 To RXEF300, RKEF250 To RKEF500) H147.5 Maximum
Overall Width with Lead Protrusion (RXEF010 To RXEF090, RKEF050 To RKEF185) C143.2 Maximum
Overall Width with Lead Protrusion* (RXEF110 To RXEF300, RKEF250 To RKEF500) C158 Maximum
Overall Width without Lead Protrusion (RXEF010 To RXEF090, RKEF050 To RKEF185) C242.5 Maximum
Overall Width without Lead Protrusion* (RXEF110 To RXEF300, RKEF250 To RKEF500) C257 Maximum
Lead Protrusion L11. 0 Maximum
Protrusion of Cut-Out L11. 0 Maximum
Protrusion beyond Hold-down Tape I2Not Specified
Sprocket Hole Pitch P012.7 ± 0.3
Device Pitch (RXEF010 To RXEF090, RKEF050 To RKEF185) 12.7 ± 0.3
Device Pitch (RXEF110 To RXEF300, RKEF250 To RKEF500) 25.4 ± 0.61
Pitch Tolerance 20 Consecutive ± 1
Tape Thickness T0.9 Maximum
Overall Tape and Lead Thickness (RXEF010 To RXEF090, RKEF050 To RKEF185) T11. 5 Maximum
Overall Tape and Lead Thickness (RXEF110 To RXEF300, RKEF250 To RKEF500) T12.3 Maximum
Splice Sprocket Hole Alignment 0 ± 0.3
Body Lateral Deviation Dh 0 ± 1.0
Body Tape Plane Deviation Dp 0 ± 1.3
Ordinate to Adjacent Component Lead (RXEF010 To RXEF185, RKEF050 To RKEF300) P13.81 ± 0.7
Ordinate to Adjacent Component Lead (RXEF250 To RXEF300, RKEF375 To RKEF500) P17.62 ± 0.7
Lead Spacing* (RXEF010 To RXEF185, RKEF050 To RKEF300) F5.05 ± 0.75
Lead Spacing* (RXEF250 To RXEF300, RKEF375 To RKEF500) F10.15 ± 0.75
Reel Width (RXEF010 To RXEF090, RKEF050 To RKEF185) W256.0 Maximum
Reel Width* (RXEF110 To RXEF300, RKEF250 To RKEF500) W263.5 Maximum
Reel Diameter A370.0 Maximum
Space between Flanges* (RXEF010 To RXEF090, RKEF050 To RKEF185) W148.00 Maximum
Space between Flanges* (RXEF110 To RXEF300, RKEF250 To RKEF500) W155.00 Maximum
Arbor Hold Diameter C26.0 ± 12.0
Core Diameter* N91.0 Maximum
Box 64/372/362 Maximum
Consecutive Missing Places None
Empty Places per Reel 0.1% Maximum
*Differs from EIA specification.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
177
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R7 — Tape and Reel Specifications (Cont’d)
RUEF and RUSBF devices are available in tape and reel packaging per EIA468–B/IEC60286–2 standards.
Description EIA Mark Dimension (mm) Tolerance
Carrier Tape Width W18 -0.5/+1.0
Hold-down Tape Width W411 Minimum
Top Distance between Tape Edges W63Maximum
Sprocket Hole Position W59-0.5/+0.75
Sprocket Hole Diameter D04± 0.2
Abscissa to Plane (Straight Lead)* (RUEF300 to RUEF900) H18.5 ± 2.5
Abscissa to Plane (Kinked Lead) (RUSBF075 to RUSBF250, RUEF090 to RUEF250) H016.0 ± 0.5
Abscissa to Top (RUSBF075 to RUSBF250, RUEF090 to RUEF300) H138.5 Maximum
Abscissa to Top* (RUEF400 to RUEF900) H145.0 Maximum
Overall Width with Lead Protrusion (RUSBF075 to RUSBF250, RUEF090 to RUEF300) C143.2 Maximum
Overall Width with Lead Protrusion (RUEF400 To RUEF900) C156 Maximum
Overall Width without Lead Protrusion (RUSBF075 to RUSBF250, RUEF090 to RUEF300) C242.5 Maximum
Overall Width without Lead Protrusion (RUEF400 to RUEF900) C256 Maximum
Lead Protrusion L11. 0 Maximum
Protrusion of Cut-out L11 Maximum
Protrusion beyond Hold-down Tape I2Not Specified
Sprocket Hole Pitch P012.7 ± 0.3
Device Pitch (RUSBF075 to RUSBF250, RUEF090 to RUEF300) 12.7 ± 0.3
Device Pitch (RUEF400 to RUEF900) 25.4 ± 0.6
Pitch Tolerance 20 Consecutive ± 1
Tape Thickness T0.9 Maximum
Overall Tape and Lead Thickness (RUSBF075 to RUSBF250, RUEF090 to RUEF50) T11. 5 Maximum
Overall Tape and Lead Thickness* (RUEF300 to RUEF900) T12.3 Maximum
Splice Sprocket Hole Alignment 0 ± 0.3
Body Lateral Deviation Dh 0 ± 1.0
Body Tape Plane Deviation Dp 0 ± 1.3
Ordinate to Adjacent Component Lead (RUSBF075 to RUSBF250, RUEF090 to RUEF300) P13.81 ± 0.7
Ordinate to Adjacent Component Lead (RUEF400 to RUEF900) P17.62 ± 0.7
Lead Spacing* (RUSBF075 to RUSBF250, RUEF090 to RUEF400) F5.05 ± 0.75
Lead Spacing* (RUEF500 to RUEF900) F10.15 ± 0.75
Reel Width (RUEF090 to RUEF400, Rusbf075 to Rusbf250) W256.0 Maximum
Reel Width (RUEF500* to RUEF900) W263.5 Maximum
Reel Diameter A370.0 Maximum
Space between Flanges* (RUEF090 to RUEF400, RUSBF075 to RUSBF250) W148.0 Maximum
Space between Flanges* (RUEF500 to RUEF900) W155.0 Maximum
Arbor Hold Diameter C26.0 ± 12.0
Core Diameter* N91.0 Maximum
Box 64/372/362 Maximum
Consecutive Missing Places None
Empty Places per Reel 0.1% Maximum
*Differs from EIA specification.
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
Table R7 — Tape and Reel Specifications (Cont’d)
RGEF and RHEF devices are available in tape and reel packaging per EIA468–B/IEC60286–2 standards.
Description EIA Mark Dimension (mm) Tolerance
Carrier Tape Width W18 -0.5/+1.0
Hold-Down Tape Width W411 Minimum
Top Distance between Tape Edges W63Maximum
Sprocket Hole Position W59-0.5/+0.75
Sprocket Hole Diameter D04± 0.2
Abscissa to Plane (Straight Lead) (RGEF250 to RGEF1400) H18.5 ± 2.5
Abscissa to Plane (Kinked Lead) (Rhef050 to RGEF1500) H016.0 ± 0.5
Abscissa to Top (RGEF250 to RGEF500, RGEF050 to RGEF450) H138.5 Maximum
Abscissa to Top* (RGEF600 to RGEF1400, RHEF550 to RHEF1500) H145.0 Maximum
Overall Width with Lead Protrusion (RGEF250 to RGEF600, RHEF050 to RHEF450) C143.2 Maximum
Overall Width with Lead Protrusion (RGEF700 to RGEF1400, RHEF550 to RHEF1500) C155 Maximum
Overall Width without Lead Protrusion (RGEF250 to RGEF600, RHEF050 to RHEF450) C242.5 Maximum
Overall Width without Lead Protrusion (RGEF700 to RGEF1400, RHEF550 to RHEF1500) C254 Maximum
Lead Protrusion L11. 0 Maximum
Protrusion of Cut-out L11 Maximum
Protrusion beyond Hold-down Tape I2Not Specified
Sprocket Hole Pitch P012.7 ± 0.3
Device Pitch (RGEF250 to RGEF700, RHEF050 to RHEF600) 25.4 ± 0.61
Device Pitch (RGEF800 to RGEF1400, RHEF650 to RHEF1500) 25.4 ± 0.6
Pitch Tolerance 20 Consecutive ± 1
Tape Thickness T0.9 Maximum
Overall Tape and Lead Thickness* (RGEF250 to RGEF1100, RHEF050 to RHEF1100) T12.0 Maximum
Overall Tape and Lead Thickness* (RGEF1200 to RGEF1400, RHEF1300 to RHEF1500) T12.3 Maximum
Splice Sprocket Hole Alignment 0 ± 0.3
Body Lateral Deviation Dh 0 ± 1.0
Body Tape Plane Deviation Dp 0 ± 1.3
Ordinate to Adjacent Component Lead (RGEF250 to RGEF1100, RHEF050 to RHEF900) P13.81 ± 0.7
Ordinate to Adjacent Component Lead (RGEF1200 to RGEF1400, RHEF1000 to RHEF1500) P17.62 ± 0.7
Lead Spacing* (RGEF250 to RGEF1100, RHEF050 to RHEF900) F5.05 ± 0.75
Lead Spacing* (RGEF1200 to RGEF1400, RHEF1000 to RHEF1500) F10.15 ± 0.75
Reel Width (RGEF250 to RGEF600, RHEF050 to RHEF450) W256.0 Maximum
Reel Width* (RGEF700 to RGEF1400 & RHEF550 to RHEF1500) W263.5 Maximum
Reel Diameter A370.0 Maximum
Space between Flanges* (RGEF250 to RGEF600, RHEF050 to RHEF450) W148.0 Maximum
Space between Flanges* (RGEF700 to RGEF400, RHEF550 to RHEF1500) W155.0 Maximum
Arbor Hold Diameter C26.0 ± 12.0
Core Diameter* N91.0 Maximum
Box 64/372/362 Maximum
Consecutive Missing Places None
Empty Places per Reel 0.1% Maximum
*Differs from EIA specification.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
179
PolySwitch Resettable Devices
Radial-Leaded Devices
w1
n
a
c
w2
Cross Section
Direction of
Unreeling
Reel
Type
Upper Side
Lower Side
Optional Shape: Circular or Polygonal
h
H1P1
D4
H0
H1
C1
C2
F
AB
Reference Plane
Direction of Unreeling
Cross Section A-B
W5
H
W
t
P0D0
I2
L
L1
hpp
Figure R21 — EIA Referenced Taped Component Dimensions
Figure R22 — EIA Referenced Reel Dimensions
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2018 Littelfuse, Inc.
PolySwitch Resettable Devices
Radial-Leaded Devices
RUEF 250 U 2
Packaging
Blank = Packaged in Bags
-1 = 25.4mm (1.0 in) Minimum Lead Length
-2 = Tape and Reel
-AP = Ammo Pack
-X.X = Special Lead Cut Length (in)
Modifier
K = Standard Kinked Lead
B = Special Kinked Lead
S = Straight Lead
U = Uncoated Device
Hold Current Indicator
Product Series
An “F” at the end of product series indicates Pb-free version of product.
Note: Kinked parts are recommended to control the height of the part on the PCB in non-auto PCB applications.
Part Numbering System
Warning :
Users should independently evaluate the suitability of and test each product selected for their own application.
Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame.
These devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should
not be used when repeated fault conditions or prolonged trip events are anticipated.
Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance of the devices.
Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and
mechanical procedures for electronic components.
PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited,
for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion.
Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of the device.
Notice:
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own
applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-
sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the
product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by
Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims
or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse
products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2018 Littelfuse, Inc.
181
PolySwitch Resettable Devices
Radial-Leaded Devices

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