Datasheet

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Part No: CEB-35D26
Date: 7/28/2006
Unit: mm
Description: piezo electric diaphragm
Page No: 1 of 4
Specifications
Maximum input voltage
Resonant frequency
Resonant impedance
Electrostatic capacitance
Operating temperature
Storage temperature
Dimensions
Weight
Material
Terminal
DC resistance
30 Vp-p
2.6 ± 0.5 KHz
300 Ω max.
30,000 ±30% pF
-20 ~ +70° C
-30 ~ +80° C
Ø35.0 x H0.53 mm
2.0 g max.
Brass
Wire type
20 M Ω min.
RoHS
yes
see Measurement Methods
see Measurement Methods
at 1 KHz / 1 V
Fluke 45 rate: Fast
Measurement time: 1 second
(only for ≤ 20 mm test)
Appearance Drawing
Tolerance: ±0.5
Phone: 800.275.4899
Fax: 503.612.2381
www.cui.com
20050 SW 112th Ave.
Tualatin, OR 97062
For more information, please visit the product page.
Part No: CEB-35D26
Date: 7/28/2006
Unit: mm
Description: piezo electric diaphragm
Page No: 2 of 4
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 100 Hz to 5 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.
Mechanical Characteristics
Item
Solderability
(Connector excepted)
Lead Wire Pull Strength
Vibration
Phone: 800.275.4899
Evaluation Standard
Test Condition
90% min. of the stripped wires
Stripped wires of lead wires are immersed in
will be wet with solder. (Except
rosin for 5 seconds and then immersed in
the edge of the terminal)
solder bath of 270 ±5°C for 3 ±0.5 seconds.
No damage or cutting off.
The horizontal force of 3.0N (0.306kg) should
be applied to the double lead wire for 30 sec.
The value of the resonant
The diaphragm should be measured after
frequency should be ±10% of the
applying a vibration amplitude of 1.5 mm with
10 to 55 Hz band of vibration frequency to each initial measurements.
Electrostatic capacitance should
of the 3 perpendicular directions for 2 hours.
be ±20% compared with the initial
measurement. The SPL should
be within ±10dB compared
with the initial measurement.
Fax: 503.612.2381
www.cui.com
20050 SW 112th Ave.
Tualatin, OR 97062
For more information, please visit the product page.
Date: 7/28/2006
Part No: CEB-35D26
Unit: mm
Description: piezo electric diaphragm
Page No: 3 of 4
Environment Test
Item
High temp. test
Low temp. test
Humidity test
Temp. cycle test
Test Condition
After being placed in a chamber at +80°C for
240 hours.
After being placed in a chamber at -30°C for
240 hours.
After being placed in a chamber at +40°C and
90±5% relative humidity for 240 hours.
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 Ω
max.
Test Conditions
Standard Test Condition
Judgement Test Condition
Phone: 800.275.4899
a) Tempurature: +5 ~ +35°C
a) Tempurature: +25 ±2°C
Fax: 503.612.2381
b) Humidity: 45 - 85%
b) Humidity: 60 - 70%
www.cui.com
c) Pressure: 860-1060 mbar
c) Pressure: 860-1060 mbar
20050 SW 112th Ave.
Tualatin, OR 97062
For more information, please visit the product page.
Part No: CEB-35D26
Date: 7/28/2006
Unit: mm
Description: piezo electric diaphragm
Page No: 4 of 4
Packaging
Phone: 800.275.4899
Fax: 503.612.2381
www.cui.com
20050 SW 112th Ave.
Tualatin, OR 97062
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