CPE-353A Datasheet, PDF (3/4 Pages) CUI INC – piezo audio indicators

PART NUMBER: CPE-353A
ENVIRONMENT TEST
item
high temp. test
low temp. test
humidity test
temp. cycle test
page 3 of 5
date 11/12/2007
DESCRIPTION: piezo audio indicators
test condition
After being placed in a chamber at +95°C for
240 hours.
After being placed in a chamber at -40°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:
+95
+25
+25
-40
evaluation standard
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
measurements. The SPL should
be within ±10dB compared to the
initial measurements.
0.5hr 0.5hr 0.25 0.5hr 0.5hr 0.5hr 0.25
3hours
RELIABILITY TEST
item
operating (life test)
TEST CONDITIONS
standard test condition
judgement test condition
test condition
1. Continuous life test:
The part will be subjected to 48 hours of
continuous operation at +70°C with rated
voltage applied.
2. Intermittent life test:
A duty cycle of 1 minute on, 1 minutes off, a
minimum of 5,000 times at room temp
(+25 ±2°C) with rated voltage applied.
evaluation standard
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
measurements. The SPL should
be within ±10dB compared to
the initial measurements.
a) tempurature: +5 ~ +35°C
a) tempurature: +25 ±2°C
b) humidity: 45 - 85% c) pressure: 860-1060 mbar
b) humidity: 60 - 70% c) pressure: 860-1060 mbar
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