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          HN ELECTRONIC

          专业从事电磁式蜂鸣器、压电式蜂鸣器生产及研发

          BJ4020

          BJ4020

          BJ4020

          BJ4020

          BJ4020

          产品说明

          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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