- Part number : BM1255B-0120-16
12mm Electronic Magnetic Transducer 3 Volt 82 dB with 2000Hz
Quick Detail:
- Size: D12mm*H5.5mm
- SPL: Min.82dB at 10cm @ 2.0KHz/3Vo-p 1/2 Duty Square Wave
- Coil Resistance: 16+/-3 ohm
- Operating Voltage: 2-4Vo-p
- Rated Current: Max.70mA @ 2.0KHz/3Vo-p 1/2 Duty Square Wave
Description:
- buzzer
- Electro-Magnetic Transduer
- 3V Buzzer
- 12mm Electro-Magnetic Buzzer
- Small Buzzer
Specification:
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 | 1.5 Vo-p | |
| 2 | Operating Voltage | 1-3Vo-p | |
| 3 | Rated Current | Max.30mA ,at 2048Hz 50% duty Square Wave 1.5Vo-p | |
| 4 | Sound Output at 10cm | Min. 75dB,at 2048Hz 50% duty Square Wave 1.5Vo-p | |
| 5 | Coil Resistance | 16±4Ω | |
| 6 | Resonant Frequency | 2048Hz | |
| 7 | Operating Temperature | -20℃～+70℃ | |
| 8 | Store Temperature | -30℃～+80℃ | |
| 9 | Net Weight | Approx 1.0g | |
| 10 | RoHS | Yes | |
2.Dimensions | Unit: mm | ||
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*Unit: mm; Tolerance: ±0.5mm Except Specified *Housing Material: Black Noryl | |||
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 voltageResonant 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 -30℃ for 96 hours.
Humidity Test
Temperature:+40℃±3℃ Relative Humidity:90%～95% Duration: 48 hoursand 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.
