Part No: CEB-20D64
Description: piezo electric diaphragm
Date: 7/28/2006
Unit: mm
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
a) Tempurature: +5 ~ +35°C
a) Tempurature: +25 ±2°C
b) Humidity: 45 - 85%
b) Humidity: 60 - 70%
c) Pressure: 860-1060 mbar
c) Pressure: 860-1060 mbar
Phone: 800.275.4899
Fax: 503.612.2381
www.cui.com
20050 SW 112th Ave.
Tualatin, OR 97062
CUI [ CUI INC ]
