大发平台游戏

  • <tr id='QihsrY'><strong id='QihsrY'></strong><small id='QihsrY'></small><button id='QihsrY'></button><li id='QihsrY'><noscript id='QihsrY'><big id='QihsrY'></big><dt id='QihsrY'></dt></noscript></li></tr><ol id='QihsrY'><option id='QihsrY'><table id='QihsrY'><blockquote id='QihsrY'><tbody id='QihsrY'></tbody></blockquote></table></option></ol><u id='QihsrY'></u><kbd id='QihsrY'><kbd id='QihsrY'></kbd></kbd>

    <code id='QihsrY'><strong id='QihsrY'></strong></code>

    <fieldset id='QihsrY'></fieldset>
          <span id='QihsrY'></span>

              <ins id='QihsrY'></ins>
              <acronym id='QihsrY'><em id='QihsrY'></em><td id='QihsrY'><div id='QihsrY'></div></td></acronym><address id='QihsrY'><big id='QihsrY'><big id='QihsrY'></big><legend id='QihsrY'></legend></big></address>

              <i id='QihsrY'><div id='QihsrY'><ins id='QihsrY'></ins></div></i>
              <i id='QihsrY'></i>
            1. <dl id='QihsrY'></dl>
              1. <blockquote id='QihsrY'><q id='QihsrY'><noscript id='QihsrY'></noscript><dt id='QihsrY'></dt></q></blockquote><noframes id='QihsrY'><i id='QihsrY'></i>

                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.