MX Series Datasheet

10-2
Keyswitch
MX Series
Specifications
Voltage 12 VAC/DC max. 2 VDC min.
Current 10mA AC/DC max. 10µA DC min.
Insulation Resistance 100 M at 100 VDC
Capacitance <2pF (at 1kHz)
Bounce Time 5 msec
(at 16 in/sec actuation speed)
Life (at 5 V, 1mA, no load)
MX Linear 50 x 106 cycles
MX Soft Tactile 20 x 106 cycles
MX Click Tactile 20 x 106 cycles
MX Alternate Action 50 x 105 cycles
Initial Contact Resist. 200 m (25 m typical)
Materials
Plastics Thermoplastic, UL-rated
Contacts AuAg 10
Spring Stainless steel
Flammability Rating UL94HB
Solderability Wave solder 5 seconds at 500°F
Environmental
Operating Temp. Range -10° to +70°C
Storage Temp. Range -40° to +70°C
Relative Humidity 5% to 95%, non-condensing
MX Desktop Profile
Dimensions: Inches (mm)
Mechanical Motion
Linear Feel Soft Tactile Feel
Operating Force 2.1 oz ±0.7 oz 2.0 oz ±0.7 oz
Pretravel 0.08" ±0.24" 0.08" ±0.24"
Total Travel 0.16" -0.015" 0.16" -0.2"
Tactile Force N/A 2.3 oz ±0.7 oz
Click Tactile Feel Alternate Action
Operating Force 1.8 oz ±0.5 oz 2.1 oz ±0.7 oz
Pretravel 0.09" ±0.24" 0.05" ±0.015"
Total Travel 0.16" -0.02" 0.16" ±0.01"
Tactile Force 2.1 oz ±0.5 oz N/A
0.61
(15.6)
0.61
(15.6)
0.46
(11.6)
0.14
(3.6)
0.20
(5.0)
0.13
(3.30)
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HEB rag U
10-3
MX Series Keyswitch
10
0.06 0.006
+
-
0.197 +0.012
PCB (with pins) Metal Frame (without pins)
A 0.004
+
-
0.60 0.004
+
-
0.275 0.004
+
-
Ø 0.12 0.004
+
-
Ø 0.157 0.002
+
-
Ø0.157 0.004
+
-
Ø0.059 0.002
+
-
Ø0.039 0.004
+
-
Ø0.067 0.002
+
-
1-Pole 1-Pole w/LED 1-Pole w/Diode
Ø0.157 0.004
+
-
Ø0.059 0.002
+
-
Ø0.039 0.004
+
-
1-Pole 1-Pole w/LED 1-Pole w/Diode
Grid line spacing = 0.05 inch
Circuit Board Layouts
Mounting Options
Keyswitch without fixation pins
Keyswitch with fixation pins
Spacebar without frame
10-4
Keyswitch
MX Series
Keycap Dimensions
Cylindrical Type (8 mm) Keyswitch
Spacebar
(Keycap sizes 1 x 2, 1 x 2.25, 1 x 2.75)
Spacebar Mounting Options
Spacebar
(Keycap sizes 1 x 3, 1 x 7, 1 x 8, 1 x 9, 1 x 10)
Standard Type (8 mm)
0.69
0.13
0.38
0.69
Keycap (8mm)
Support
Housing
Wire PCB (with pins)
Metal Frame (without pins)
Metal Frame
0.551 0.002
+
-
0.551 0.002
+
-
0.06 0.004
+
-
R 0.012 Max.
D2 DIN6784
C3 DIN6784
0.55 0.002
+
-
0.12 0.004
+
-
A 0.004
+
-
0.166 0.004
+
-
0.262 0.004
+
-
0.031 0.004
+
-
0.484 0.004
+
-
0.53 0.006
+
-
0.032 0.004
+
-
0.26 0.004
+
-
0.02
0.11 0.008
+
-
R 0.012 max
R 0.012 max
Metal Frame Cutout Dimensions
0.704
0.13
0.43
0.82 Row E
0.74 Row B
0.736 Row D
0.704 Row C
ABCDEF
0.12 0.004
+
-
0.165 0.004
+
-
0.484 0.004
+
-
0.53 0.006
+
-
0.11 0.008
+
-
0.262 0.004
+
-
0.55 0.002
+
-
A 0.004
+
-
0.26 0.004
+
-
R 0.012
max
R 0.012
max
Leveling Mechanism Kits
1 x 2 1 x 8
Keycap Size 1 x 2, 2.5 1 x 3 1 x 8 1 x 9 1 x 7
1 x 2, 2.75 1 x 10
Keycap Type Std & Cylin Std & Cylin Std Cylin Cylin
A (inches) 0.94 1.5 5.25 5.25 4.5
P/N w/frame G99-0224 G99-0225 G99-0226 G99-0226 G99-0379
P/N w/o frame G99-0742 G99-0743 G99-0744 G99-0744 G99-0745
10-5
MX Series Keyswitch
10
N No pins
(metal frame req)
W With pins
Ordering InformationSoldering Parameters
1. Flux Station
A. Flux Fry type GR8
B. Applied by foaming
C. Specific gravity 0.820 g/cm3
2. Conveyor Speed
A. 2.3 meters/min.
3. Pre-heat Temperature
A. +88°C measured on top surface of PCB
4. Solder
A. 63/37 alloy
B. Dry wave no oil
C. Approximate contact with wave 2 seconds
5. Cleaning
A. Fry GR8 is non-hygroscopic flux and does not require
cleaning
B. If cleaning is required on isolated areas such as finger
connector, cold cleaning by hand with Alpha 564 is
recommended. Care must be taken to avoid solvent
entering the keymodule.
Part Number Description
MX1A-11DN Standard force, momentary face plate
mount with diode
MX1A-11NN Standard force, linear, face plate mount
MX1A-11NW Standard force, linear, PCB mount
MX1A-21NW Higher force, linear, PCB mount
MX1A-31NN Alternate action, face plate mount
MX1A-31NW Alternate action, PCB mount
MX1A-C1NN Standard force, soft tactile, face plate
mount
MX1A-C1NW Standard force, soft tactile, PCB mount
MX1A-E1NN Standard force, click tactile, face plate
mount
MX1A-E1NW Standard force, click tactile, PCB mount
Ordering Information
Keyswitch/Type
Contact
Code Material
1 AuAg10
10mA/12V
max
2
3
4
5 Special
Contact
Code Config.
A SPSTNO
B
C Special
D
0 Special
1 Momentary, single pole, 2.1 oz, standard
keyswitch, black keystem
2 Momentary, single pole, 2.8 oz, spacebar,
grey 37 keystem
3 Alternate action, single pole, 2.1 oz
C Momentary, single pole, tactile feel, 2.3 oz,
clear keystem
D Momentary, single pole, tactile feel, 2.8 oz,
spacebar, grey 39 keystem
E Momentary single pole, tactile feel 2.1 oz,
click differential movement, blue keystem
F Momentary, single pole, tactiel feel, 2.8 oz,
click differential movement, space bar,
green keystem
C
O
D
E
C
O
D
E
PCB
Mounting
Pins
LED
Code Diode
N No LED
No diode
R Red LED
no diode
G Green LED
no diode
Y Yellow LED
w/diode
D No LED
w/diode
J w/jumper wire
no LED
no diode
Operating Characteristics,
Actuating Force and Key Style Keystem
Configuration
1 Std straight
for cylin & std
keycaps
C
O
D
E
1 N N
1A1
MX