KLJ-1230
DATE:2010.02.23
1﹒Electrical Characteristics
Operating Voltage
Current Consumption
Sound Pressure Level
Electrostatic Capacity
Operating Temperature (
℃
)
Storage Temperature (
℃
)
Dimension
Max20Vp-p
VER .:0
Max 1mA at 3Vp-p/Square Wave/4.0KHz
Min 80dB at 10cm/ 3Vp-p/Square Wave/4.1KHz
16000±
30%pF at 1 KHz/1V
-20~ +70
-30 ~ +80
L12×
W12×
H3.0mm
2﹒Typical Frequency Response Curve
．
Standard Measurement conditions
Temperature:25
±
2
℃
Humidity:45-60%
．
Acoustic Characteristics
The oscillation frequency, current consumption and sound pressure are measured by the
measuring instruments shown below.
10cm
FUNCTION
GENERATOR
AMPERE
METER
SOUNDER
MICROPHONE
dB
METER
In the measuring test, buzzer is placed as follows:
MICROPHONE
SAMPLE
1OCM
5.
RELIABILITY
ITEMS
Coldness
withstanding
Hotness
withstanding
Humidity
withstanding
METHOD OF TEST AND MEASUREMENTS
After 98 hours of being exposed to -30
℃
environment, should be returned to normal
environment for 2 hours, then re-proceed to test.
After 98 hours of being exposed to +100
℃
environment, should be returned to normal
environment for 2 hours, then re-proceed to test.
After 98 hours of being exposed to 40
℃
95%RH
environment in actual operation, should be
returned to normal environment for 2 hours, then
re-proceed to test.
PERFORMANCE
No abnormality
shall exist
No abnormality
shall exist
No abnormality
shall exist
Durability
Drop
withstanding
Vibration
withstanding
Testing after 1,000 hours actual continuous
operation.(at standard measurement conditions)
A natural drop from 75cm high down to the
ground.
Vibration of 2,000 cycles per minute, 2mm
amplitude, applied in X, Y and Z directions for 30
minutes each.
No abnormality
shall exist
No abnormality
shall exist
No abnormality
shall exist
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