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  • 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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