date
page
PART NUMBER: DESCRIPTION:
09/2010
3 of 4
PIEZO AUDIO TRANSDUCER
CPE-1785
20050 SW 112
th
Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
MECHANICAL CHARACTERISTICS
item test condition evaluation standard
solderability
1
Lead terminals are immersed in rosin for 5 seconds and then im-
mersed in a solder bath of +270 ±5°C for 3 ±1 seconds.
90% min. of the lead terminals will be
wet with solder.
(except the edge of the terminal)
soldering heat resistance Lead terminals are immersed up to 1.5 mm from the buzzer’s
body in a solder bath of 300 ±5°C for 3 ±0.5 seconds or 260 ±5°C
for 10 ±1 second.
No interference in operation.
terminal mechanical strength The force of 9.8 N is applied for 10 sec. to each terminal in axial
direction.
No damage or cutting off.
vibration test The buzzer should be measured after a vibration amplitude of
0.75 mm with 10 ~ 55 Hz band of vibration frequency to each of
the 3 perpendicular directions for 0.5 hours.
The value of oscillation frequency /
current consumption
should be ±10% of the initial
measurements. The SPL should
be within ±10dB compared with
the initial measurement.
drop test The buzzer without packaging is subjected to 3 drops on each
axis from the height of 70 cm onto a 10 mm thick wooden board.
Notes: 1. Not recommended for wave soldering
ENVIRONMENT TEST
item test condition evaluation standard
high temperature test After being placed in a chamber at +80°C for 96 hours.
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.
low temperature test After being placed in a chamber at -30°C for 96 hours.
humidity test After being placed in a chamber at +40°C and 90 ±5% RH for
96 hours.
temperature cycle test The part will be subjected to 5 cycles. One cycle will consist of:
RELIABILITY TEST
item test condition evaluation standard
operating (life test) 1. Continuous life test:
The part will be subjected to 48 hours of continuous operation at
55°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.
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.
TEST CONDITIONS
standard test conditions a) Temperature: +5 ~ +35°C b) Humidity: 45 ~ 85% c) Pressure: 860 ~ 1060 mbar
judgement test conditions a) Temperature: +25 ±2°C b) Humidity: 60 ~ 70% c) Pressure: 860 ~ 1060 mbar
For more information, please visit the product page.
