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Specification For Magnetic Buzzer SMD Type|BM5020S-3640-1201

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    2. 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

    2.1 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.

    2.2 High Temperature Test

    The part shall be capable of with standing a storage temperature of +85? for 96 hours.

    2.3 Low Temperature Test

    The part shall be capable of with standing a storage temperature of -40? for 96 hours.

    2.4 Humidity Test

    Temperature:+40?±3? Relative Humidity:90%~95% Duration: 48 hours

    and expose to room temperature for 6 hours

    2.5 Temperature Shock Test

    Temperature:70? /1hour? 25?/3hours?-30?/1hour? 25?/3hours (1cycle)

    Total cycle: 10 cycles

    2.6 Drop Test

    Standard Packaging From 1.2m(Drop on hard wood or board of 5cm thick,

    three sides, six plain.)

    2.7 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.


    3. Electrical And Acoustical Measuring Condition

    3.1 Recommended Driving Circuit

    Resonant frequency, 1/2 duty cycle.

    Square wave.Signal amplitude should be

    large enough to saturate the transistor.

    3.2 Recommended Setting


    4. Frequency Response

    3.6Vo-p 50% duty Square wave,10cm

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