Acoustic Characteristics:
The oscillation frequency, current consumption and sound pressure are measured by the
measuring instruments shown below
In the measuring test, buzzer is placed as follows:
Typical Frequency Response Curve
RELIABILITY TEST:
NO.
ITEM
1
2
TESTING CONDITION
VARIANCE AFTER TEST
3
4
5
High temp.
The part shall be capable of withstanding a
storage life
storage temperature is +120℃ for 120 hours
Low
temp.
The part shall be capable of withstanding a
storage life
storage temperature is -40℃ for 120 hours
Total 5 cycles,
1 cycle consisting of -40±2℃, 30 minutes
20±5℃ 15 minutes
Temp. Cycle
120±2℃,
30 minutes
20±5℃ 15 minutes
After the test the part
Humidity Test
30±2℃, 90½95% RH, 120 hours
shall
meet
The part shall be subjected to a vibration cycle is 10Hz
specifications
without
in a period of 1 minute. Total peak amplitude shall be
any
degradation
in
1.52mm(9.3g).
appearance
and
Vibration Test
The vibration test shall consist of 2 hours per
performance except SPL
plane in each three mutually perpendicular
shall be initial value±
10dB or more.
planes for a total time of 6 hours.
Sounder shall be measured after being
applied shock (980m/s²) for each three
mutually perpendicular directions to each of
3 times by half sine wave.
Dropped naturally from 700mm height onto
the surface of 10mm thick wooden board. 2
directions-upper and side of the part are to be
applied.
The part shall be pushed with a force of 9.8N After the test part shall meet
for 10±1 seconds behind the part.
specifications without any
degradation in appearance
and performance.
Shown in Fig.1
6
Shock
7
Drop Test
8
Lead pull
Recommended
temp. Profile
for Reflow
Oven
9
Warranty
:For a period of one year from date of manufcture under normal operations.
51单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
