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CEB-20D64 Datasheet

CUI Inc.

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Datasheet

Part No: CEB-20D64
Description: piezo electric diaphragm
Phone: 800.275.4899 Fax: 503.612.2381 www.cui.com 20050 SW 112th Ave. Tualatin, OR 97062
Date: 7/28/2006
Unit: mm
Page No: 1 of 4
Specifications
Maximum input voltage 30 Vp-p
Resonant frequency 6.5 ± 0.5 KHz see Measurement Methods
Resonant impedance 350 max. see Measurement Methods
Electrostatic capacitance 13,000 ±30% pF at 120 Hz / 1 V
Operating temperature -20 ~ +70° C
Storage temperature -30 ~ +80° C
Dimensions Ø20.0 x H0.43 mm
Weight 1.50 g max.
Material Brass
Terminal Wire type
DC resistance 20 M min. Fluke 45 rate: Fast
Measurement time: 1 second
(only for 20 mm test)
RoHS yes
Appearance Drawing
Tolerance: ±0.5
For more information, please visit the product page.
Part No: CEB-20D64
Description: piezo electric diaphragm
Phone: 800.275.4899 Fax: 503.612.2381 www.cui.com 20050 SW 112th Ave. Tualatin, OR 97062
Date: 7/28/2006
Unit: mm
Page No: 2 of 4
Mechanical Characteristics
Item Test Condition
Solderability Stripped wires of lead wires are immersed in
(Connector excepted) rosin for 5 seconds and then immersed in
solder bath of 270 ±5°C for 3 ±0.5 seconds.
Lead Wire Pull Strength The horizontal force of 3.0N (0.306kg) should
be applied to the double lead wire for 30 sec.
Vibration The diaphragm should be measured after
applying a vibration amplitude of 1.5 mm with
10 to 55 Hz band of vibration frequency to each
of the 3 perpendicular directions for 2 hours.
Evaluation Standard
90% min. of the stripped wires
will be wet with solder. (Except
the edge of the terminal)
No damage or cutting off.
The value of the resonant
frequency should be ±10% of the
initial measurements.
Electrostatic capacitance should
be ±20% compared with the initial
measurement. The SPL should
be within ±10dB compared
with the initial measurement.
Measuring Methods
1) Resonant frequency / Resonant impedance
The piezo electric diaphragm should be clamped at a node point (as shown in the following figure) to be free from any
mechanical stress. Measure its resonant frequency and resonant impedance by using a vector impedance analyzer or
equivalent.
When the input frequency is swept within 2 KHz to 8 KHz, the resonant frequency is defined as the frequency where
the impedance shows minimum value. This impedance should be the resonant impedance.
2) Static capacitance
The electrostatic capacitance should be measured at 120 Hz by using an L.C.R. meter (ex. HP4194A(H.P.)) or
equivalent. The part should be clamped in the same way as the measurement or resonant frequency / resonant
impedance mentioned above.
For more information, please visit the product page.
Part No: CEB-20D64
Description: piezo electric diaphragm
Phone: 800.275.4899 Fax: 503.612.2381 www.cui.com 20050 SW 112th Ave. Tualatin, OR 97062
Date: 7/28/2006
Unit: mm
Page No: 3 of 4
Environment Test
Item Test Condition
High temp. test After being placed in a chamber at +80°C for
240 hours.
Low temp. test After being placed in a chamber at -30°C for
240 hours.
Humidity test After being placed in a chamber at +40°C and
90±5% relative humidity for 240 hours.
Temp. cycle test The part shall be subjected to 5 cycles. One
cycle will consist of:
Evaluation Standard
The diaphragm will be measured
after being placed at +25°C for 4
hours. The value of the
resonant frequency should be
±10%, the value of the electro
static capacitance should be
±20% compared to the initial
measurements. The resonant
impedance should be 2,000
max.
Test Conditions
Standard Test Condition a) Tempurature: +5 ~ +35°C b) Humidity: 45 - 85% c) Pressure: 860-1060 mbar
Judgement Test Condition a) Tempurature: +25 ±2°C b) Humidity: 60 - 70% c) Pressure: 860-1060 mbar
For more information, please visit the product page.
Part No: CEB-20D64
Description: piezo electric diaphragm
Phone: 800.275.4899 Fax: 503.612.2381 www.cui.com 20050 SW 112th Ave. Tualatin, OR 97062
Date: 7/28/2006
Unit: mm
Page No: 4 of 4
Packaging
For more information, please visit the product page.

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