Buzzer BM9040S-0327-16

  • BM9040S.jpg

Buzzer BM9040S-0327-16

Parts shall be measured under one condition (temperature: 5~35 ℃, humidity: 45% ~ 85% R.H., atmospheric pressure: 860 ~ 1060hPa), unless standard conditions (temperature: 25±3 ℃, humidity: 60±10%R.H. atmospheric pressure: 860 ~ 1060hPa) are adjusted.

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Keywords: buzzer | horn | materialized film

Product Description

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 2~5Vo-p
3 Rated Current Max.100mA ,at 2731Hz 50% duty Square Wave 3Vo-p
4 Sound Output at 10cm Min. 90dB,at 2731Hz 50% duty Square Wave 3Vo-p
5 Coil Resistance 16±3Ω
6 Resonant Frequency 2731Hz
7 Operating Temperature -20℃~+70℃
8 Store Temperature -40℃~+85℃
9 Net Weight Approx 0.4g
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

3Vo-p 50% duty Square wave,10cm

5. Surface mounting condition

5.1 Reflow soldering

Recommendable reflow soldering condition is as follows.

Note :

(1) In automated mounting of the SMD sound transducers on PCB, any bending, expanding and pulling forces or shocks against the SMD sound transducers shall be kept minimum to prevent them from electrical failures and mechanical damages of the devices.
(2) In the reflow soldering, too high soldering temperatures and too large temperature Gradient such as rapid heating or cooling may cause electrical failures and mechanical damages of the devices.

5.2 Soldering pattern

6.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
a)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.
B) High Temperature Test
The part shall be capable of with standing a storage temperature of +85 ℃ for 96 hours.
c)Low Temperature Test
The part shall be capable of with standing a storage temperature of -40 ℃ for 96 hours.
d)Humidity Test
Temperature:+40 ℃ 3 ℃ Relative Humidity:90% ~ 95% Duration: 48 hours and exposed to room temperature for 6 hours
e)Temperature Shock Test
Temperature:60 ℃/1hour → 25 ℃/3hours →-20 ℃/1hour → 25 ℃/3hours (1cycle) Total cycle: 10 cycles
f)Drop Test
Standard Packaging From 75cm(Drop on hard wood or board of 5cm thick, three sides, six plain.)
g)Vibration Test
Vibration:1000cycles /min. Amplitude:1.5mm, Duration: 1 hour in each 3 axes
h)Vibration Test
Use recommendable reflow soldering condition (as shown in 5.1)
(1) No abnormality should be found after reflow
(2) Good soldering to meet soldering requirements


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.


packing requirements

braid packing: see drawing requirements
carton material number: F6-005; outer box size 35*32 * 36cm
inner box material number: F6-054; Inner box size 76 * 45.5cm
carrying tape material number: F6-S90401; Upper sealing tape: F6-SF213
Each carrier plate is packed in a large PE bag and then put into the inner box; PE bag material number: F6-610

shipping mark requirements

inner box:

according to customer order


according to customer order

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Contact Us


Mobile Phone: 008613813568186
Fax: 0519-88739926
Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province

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