- Part number : BM9042-0327-16
Micro 9MM Electronic Passive Magnetic Transducer 3Volt 85 dB
Quick Detail:
- Size: D9.2mm*H4.2mm
- SPL: Min.85dB at 10cm @ 2.7KHz/3Vo-p 1/2 Duty Square Wave
- Coil Resistance: 16+/-4 ohm
- Operating Voltage: 2-4Vo-p
- Rated Current: Max.70mA @ 2.7KHz/3Vo-p 1/2 Duty Square Wave
Description:
- buzzer
- Electro-Magnetic Transduer
- 3V Buzzer
- 9mm Electro-Magnetic Buzzer
- Small Buzzer
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 | 2-4 Vo-p | |
| 3 | Rated Current | Max.80mA ,at 2731Hz 50% duty Square Wave 3Vo-p | |
| 4 | Sound Output at 10cm | Min. 85dB,at 2731Hz 50% duty Square Wave 3Vo-p | |
| 5 | Coil Resistance | 16±4Ω | |
| 6 | Resonant Frequency | 2731Hz | |
| 7 | Operating Temperature | -20℃～+70℃ | |
| 8 | Store Temperature | -30℃～+80℃ | |
| 9 | Net Weight | Approx 1g | |
| 10 | RoHS | Yes | |
2.Dimensions | Unit: mm | ||
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*Unit: mm; Tolerance: ±0.5mm Except Specified *Housing Material: Black PPO | |||
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.Frequency Response
3Vo-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 voltageResonant frequency, 1/2 duty Square wave.
5.2 High Temperature Test The part shall be capable of with standing a storage temperature of +70℃ for 96 hours.
5.3 Low Temperature Test The part shall be capable of with standing a storage temperature of -40℃ 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 75mm(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. |
6.Recommended the wave soldering temperature
Note: This Chart only shows the soldering temperature of the pins; but the part of the shell could not overrun 80℃ |
