SPECIFICATION FOR APPROVAL Customer： Description： Piezoelectric Ceramic Buzzer SOBERTON PART NO. PT-1704 Date：2014-01-06 Customer Model No. ： Date of Approval Authorization Signature 211 N. First Street Minneapolis, MN. 55401 Fax ：952-933-3120 Tel：612-849-6205 Http://www.sob erton.com E-mail： info@sob erton.com Approved Checked Design Jasmine Frank Jim 2014/07/03 2014/07/03 2014/07/03 MODEL NUMBER CUSTOMER NUMBER PRODUCT TYPE REVERSION DATE PAGE Buzzer A 2014-07-03 2/4 PT-1704 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. 1 Resonant Frequency 4000±500Hz 2 Operating Voltage 1～20 Vp-p 3 Rated Current Max.3mA , At 4KHz 50% duty Square Wave 3Vp-p 4 Sound Output at 10cm Min. 75dB, At 4KHz 50% duty Square Wave 3Vp-p 5 Capacitance 15000±30% pF At 120Hz 6 Operating Temperature -20℃～+70℃ 7 Store Temperature -30℃～+80℃ 8 Net Weight Approx 1g 9 RoHS Yes 2. Dimensions Unit: mm *Unit: mm; Tolerance: ±0.5mm Except Specified MODEL NUMBER CUSTOMER NUMBER PRODUCT TYPE REVERSION DATE PAGE Buzzer A 2014-07-03 3/4 PT-1704 3. Electrical And Acoustical Measuring Condition Recommended Setting Mic. dB Buzzer 10 cm 40 cm SM-1641 FUNC TION GENERATOR 信号发生仪 4. Frequency Response 5Vp-p 50% duty Square wave,10cm SPL MODEL NUMBER PT-1704 CUSTOMER NUMBER PRODUCT TYPE REVERSION DATE PAGE Buzzer A 2014-07-03 4/4 5. 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 -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 +70℃ 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:60℃ /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.