HN ELECTRONIC

專業從事電磁式蜂鳴器、壓電式蜂鳴器生產及研發

BJ4020

BJ4020

BJ4020

BJ4020

BJ4020

產品說明

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.

1Resonant Frequency3000 500Hz
2Operating Voltage1 ~25 Vp-p
3Rated CurrentMax.5mA ,At 3KHz 50% duty Square Wave 3Vp-p
4Sound Output at 30cmMin. 89dB,At 3KHz 50% duty Square Wave 3Vp-p
5Capacitance30000 ± 30% pF At 1KHz
6Operating Temperature-20 - +70℃
7Storage Temperature-30 - +80℃
8RoHSYes
9WeightApprox  15g

 

2.     Dimensions
Unit: mm           Tolerance: ±0.5mmExcept Specified

*Housing Material: Black  PPO


3.Electrical And Acoustical Measuring Condition
Recommended Setting


4.Frequency Response

3Vp-p 50% duty Square wave,30cm


5.ReliabilityTest
After any following tests the part shall meet specifications without any degradation in
appearance and performance except SPL. SPL shall not deviate more than -5 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→-20℃/1hour→25℃/3hours (1cycle)
Total cycle: 10 cycles
5.6 Drop Test
Standard Packaging From 1.2m(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.

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