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BM1238-0320-16
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 | 3Vo-p | |
2 | Operating Voltage | 1-3Vo-p | |
3 | Rated Current | Max.90mA ,at 2000Hz 50% duty Square Wave 3.0Vo-p | |
4 | Sound Output at 10cm | Min. 85dB,at 2000Hz 50% duty Square Wave 3.0Vo-p | |
5 | Coil Resistance | 16±5Ω | |
6 | Resonant Frequency | 2048Hz | |
7 | Operating Temperature | -20℃～+70℃ | |
8 | Store Temperature | -30℃～+80℃ | |
9 | Net Weight | Approx 2g | |
10 | RoHS | Yes | |
2. Dimensions | Unit: mm | ||
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*Unit: mm; Tolerance: ±0.5mm Except Specified *Housing Material: Black PBT | |||
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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
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4. 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 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. High Temperature Test The part shall be capable of with standing a storage temperature of +80℃ for 96 hours. Low Temperature Test The part shall be capable of with standing a storage temperature of -40℃ for 96 hours. Humidity Test Temperature:+40℃±3℃ Relative Humidity:90%～95% Duration: 48 hours and expose to room temperature for 6 hours Temperature Shock Test Temperature:70℃ /1hour→ 25℃/3hours→-30℃/1hour→ 25℃/3hours (1cycle) Total cycle: 10 cycles Drop Test Standard Packaging From 75mm(Drop on hard wood or board of 5cm thick, three sides, six plain.) 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.
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5. PACKING
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