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Piezo Electric Sounder
PT-4175WQ
(RoHS) DATE:2009.05.11
1﹒Electrical Characteristics VER .:3
Resonant Frequency (KHz) | 0.75 ±0.25 |
Operating Voltage (Vp-p/max) | 30 |
Rated Voltage (Vp-p) | 5.0 |
Current Consumption (mA/max) | 1.5 at Rated Voltage |
Sound Pressure Level (dB/min) | 87 at 10cm at Rated Voltage |
Capacitance (pF) | 70,000 ± 30﹪at 120Hz |
Operating Temperature (℃) | -20 ~ +70 |
Storage Temperature (℃) | -30 ~ +80 |
PS：Vp-p＝1/2duty , square wave
2﹒Typical Frequency Response Curve
3﹒Dimensions and Material
3-1 Shape
3-2 Material
Housing | ABS 757 UL94HB plastic resin (Color : Black) |
Leading Wire | 28 AWG |
Weight (Gram) | 9.2 |
4. TESTING METHOD
．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.
5. RELIABILITY
ITEMS | METHOD OF TEST AND MEASUREMENTS | PERFORMANCE |
Coldness withstanding | After 98 hours of being exposed to -30℃ environment, should be returned to normal environment for 2 hours, then re-proceed to test. | No abnormality shall exist |
Hotness withstanding | After 98 hours of being exposed to +80℃ environment, should be returned to normal environment for 2 hours, then re-proceed to test. | No abnormality shall exist |
Humidity withstanding | 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. | No abnormality shall exist |
Durability | Testing after 1,000 hours actual continuous operation. (at standard measurement conditions) | No abnormality shall exist |
Drop withstanding | A natural drop from 75cm high down to the ground. | No abnormality shall exist |
Vibration withstanding
| Vibration of 2,000 cycles per minute, 2mm amplitude, applied in X, Y and Z directions for 30 minutes each. | No abnormality shall exist |
6. PACKAGE METHOD
< 1 >100pcs per box , Total 10 boxes per carton , total 1000pcs carton;
Volume: L*W*H=520*335*290mm
< 2 >N﹒W﹒：；12KGS； G﹒W﹒：13KGS；
< 3 >RoHS Mark
