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Tel：18706122270
Fax：0519-88739926
E-mail：xrm@czfhd.com
Address：Zhenglu Town, Tianning District,
Changzhou, Jiangsu
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PRODUCTS
BM1290
1.Technical Parameter
Measuring condition
Part shall be measured under a condition (Temperature: 5～35℃, Humidity: 45%～85%R.H., Atmospheric pressure: 860 ～1060hPa) unless the standard condition (Temperature: 25±3℃, Humidity: 60±10%R.H. Atmospheric pressure: 860 ～1060hPa) is regulated to measure.
|
1 |
Rated Voltage |
5Vo-p |
|
2 |
Operating Voltage |
3-7 Vo-p |
|
3 |
Rated Current |
Max.80mA ,at 2400Hz 50% duty Square Wave 5Vo-p |
|
4 |
Sound Output at 10cm |
Min. 85dB,at 2400Hz 50% duty Square Wave 5Vo-p |
|
5 |
Coil Resistance |
42±5Ω |
|
6 |
Resonant Frequency |
2400Hz |
|
7 |
Operating Temperature |
-20℃～+70℃ |
|
8 |
Store Temperature |
-30℃～+80℃ |
|
9 |
Net Weight |
Approx 1.5g |
|
10 |
RoHS |
Yes |
2.Dimensions Unit: mm
*Unit: mm; Tolerance: ±0.3mm Except Specified
*Housing Material: Black LCP
*Terminal plate: 2 soldering pads, tin Plating Brass
3.Electrical And Acoustical Measuring Condition
Recommended Driving Circuit
Resonant frequency, 1/2 duty cycle. Square wave.
Signal amplitude should be large enough tosaturate the transistor.
Recommended Setting
4.Frequency Response
5Vo-p 50% duty Square wave,10cm
5.Reliability Test
After any following tests the part shall meet specifications without any degradation in appearance and performance except SPL. SPL shall not deviate more than -10 dB from the initial value.
5.1 Ordinary Temperature Life Test
The part shall be subjected to 96 hours at 25±10℃. Input rated voltage
Resonant frequency, 1/2 duty Square wave.
5.2 High Temperature Test
The part shall be capable of with standing a storage temperature of +80℃ for 96 hours.
5.3 Low Temperature Test
The part shall be capable of with standing a storage temperature of -30℃ for 96 hours.
5.4 Humidity Test
Temperature:+40℃±3℃ Relative Humidity:90%～95% Duration: 48 hours and expose to room temperature for 6 hours.
5.5 Temperature Shock Test
Temperature:70℃ /1hour→ 25℃/3hours→-30℃/1hour→ 25℃/3hours (1cycle)
Total cycle: 10 cycles
5.6 Drop Test
Standard Packaging From 120cm(Drop on hard wood or board of 5cm thick, three sides, six plain.)
5.7 Vibration Test
Vibration:1000cycles /min. Amplitude:1.5mm, Duration: 1 hour in each 3 axes
Note:
As this product is not protected from foreign material entering, please make sure that any foreign materials (e.g. magnetic powder, washing solvent, flux, corrosive gas) do not enter this product in your production processes. The functional degradation (e.g. SPL down) may occur if foreign material enter it.