Date: 9/22/2006
Unit: mm
Part No: CEP-2280
Description: piezo audio indicator
Page No: 3 of 4
Environment Test
Item
Test Condition
Evaluation Standard
High temp. test
After being placed in a chamber at +70°C for
240 hours.
Low temp. test
Humidity test
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:
The buzzer will be measured after
being placed at +25°C for 4
hours. The value of the
oscillation frequency/current
consumption should be within
±10% compared to the initial
measurements. The SPL should
be within ±10dB compared to the
initial measurements.
Temp. cycle test
Reliability Test
Item
Test Condition
Evaluation Standard
Operating (Life Test)
1. Continuous life test:
The buzzer will be measured after
being placed at +25°C for 4
hours. The value of the
oscillation frequency/current
consumption should be ±10%
compared to the initial
The part will be subjected to 48 hours of
continuous operation at +45°C with rated
voltage applied.
2. Intermittent life test:
A duty cycle of 1 minute on, 1 minute off, a
minimum of 5,000 times at room temp
(+25±2°C) with rated voltage applied.
measurements. The SPL should
be ±10dB compared to the initial
measurements.
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 ]
