MLT-8540

规格书 Specification 江苏华能电子有限公司 JIANGSU HUANENG ELECTRONICS CO., LTD. CUSTOMER: MODEL NO.: MLT-8540 OUR PART NO..: CUSTOMER PART NO.: CUSTOMER APPROVED CHECKED Add: Chenbao Industrial Park, Chenbao Town, Xinghua,Taizhou City, Jiangsu China. 江苏省兴化市陈堡镇工业园区 Tel:+86-523-83710666 Fax:+86-523-83724866 Email: hn@huawha.com; http://www.huawha.com 江苏华能电子有限公司 JIANG SU HUANENG ELECTRONICS CO.,LTD Specification for Electro-Magnetic Buzzer Model No.: MLT-8540 Part No. Chenbao Industrial Park, Chenbao Town, Xinghua,Taizhou City,China. Jiangsu China. Tel:+86-523-83710666 Fax:+86-523-83724866 Email: hn@huawha.com; http://www.huawha.com Des. Page 2 of 6 Chk. 5/22/2017 5/22/2017 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 Rated Voltage 3.6 Vo-p 2 Operating Voltage 2.5～4.5 Vo-p 3 Rated Current Max.95mA ,at 2700Hz 50% duty Square Wave 5Vo-p 4 Sound Output at 10cm Min. 80dB,at 2700Hz 50% duty Square Wave 5Vo-p 5 Coil Resistance 16±3Ω 6 Resonant Frequency 2700Hz 7 Operating Temperature -20℃～+70℃ 8 Store Temperature -40℃～+85℃ 9 Net Weight Approx 1g 10 RoHS Yes 2. Dimensions Unit: mm *Unit: mm; Tolerance: ±0.3mm Except Specified *Housing Material: Black LCP *Terminal plate: 3 soldering pads, tin Plating Brass Chenbao Industrial Park, Chenbao Town, Xinghua,Taizhou City,China. Jiangsu China. 江苏华能电子有限公司 JIANG SU HUANENG ELECTRONICS CO.,LTD Tel:+86-523-83710666 Fax:+86-523-83724866 Email: hn@huawha.com; http://www.huawha.com Specification for Electro-Magnetic Buzzer Model No.: MLT-8540 Part No. Des. Page 3 of 6 Chk. 5/22/2017 5/22/2017 3. Electrical And Acoustical Measuring Condition Recommended Driving Circuit Recommended Setting SM-1641 FUNC TION GENERATOR 信号发生仪 Resonant frequency, 1/2 duty cycle. Square wave. Amplifier 放大器 Mic. dB Buzzer 10cm the transistor. Power 电源 SPL 40cm Signal amplitude should be large enough tosaturate 测试示意图 4. Frequency Response 3.6Vo-p 50% duty Square wave,10cm 江苏华能电子有限公司 JIANG SU HUANENG ELECTRONICS CO.,LTD Specification for Electro-Magnetic Buzzer Model No.: MLT-8540 Part No. Chenbao Industrial Park, Chenbao Town, Xinghua,Taizhou City,China. Jiangsu China. Tel:+86-523-83710666 Fax:+86-523-83724866 Email: hn@huawha.com; http://www.huawha.com Des. Page 4 of 6 Chk. 5/22/2017 5/22/2017 5. Surface mounting condition 5.1 Reflow soldering Recommendable reflow soldering condition is as follows. Note: (1) In automated mounting of the SMD sound transducers on PCB, any bending, expanding and pulling forces or shocks against the SMD sound transducers shall be kept minimum to prevent them from electrical failures and mechanical damages of the devices. (2) In the reflow soldering, too high soldering temperatures and too large temperature Gradient such as rapid heating or cooling may cause electrical failures and mechanical damages of the devices. 5.2 Soldering pattern 江苏华能电子有限公司 JIANG SU HUANENG ELECTRONICS CO.,LTD Specification for Electro-Magnetic Buzzer Model No.: MLT-8540 Part No. Chenbao Industrial Park, Chenbao Town, Xinghua,Taizhou City,China. Jiangsu China. Tel:+86-523-83710666 Fax:+86-523-83724866 Email: hn@huawha.com; http://www.huawha.com Des. Page 5 of 6 Chk. 5/22/2017 5/22/2017 6. 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 6.1 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. 6.2 High Temperature Test The part shall be capable of with standing a storage temperature of +80℃ for 96 hours. 6.3 Low Temperature Test The part shall be capable of with standing a storage temperature of -30 ℃ for 96 hours. 6.4 Humidity Test Temperature:+40℃±3℃ Relative Humidity:90%～95% Duration: 48 hours and expose to room temperature for 6 hours 6.5 Temperature Shock Test Temperature:60℃ /1hour→ 25℃/3hours→-20℃/1hour→ 25℃/3hours (1cycle) Total cycle: 10 cycles 6.6 Drop Test Standard Packaging From 75cm(Drop on hard wood or board of 5cm thick, three sides, six plain.) 6.7 Vibration Test Vibration:1000cycles /min. Amplitude:1.5mm, Duration: 1 hour in each 3 axes 6.8 Reflow Test Use recommendable reflow soldering condition (as shown in 5.1) (1) No abnormality should be found after reflow (2) Good soldering to meet soldering requirements 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. 江苏华能电子有限公司 JIANG SU HUANENG ELECTRONICS CO.,LTD Specification for Electro-Magnetic Buzzer Model No.: MLT-8540 7 Packing Part No. Chenbao Industrial Park, Chenbao Town, Xinghua,Taizhou City,China. Jiangsu China. Tel:+86-523-83710666 Fax:+86-523-83724866 Email: hn@huawha.com; http://www.huawha.com Des. Page 6 of 6 Chk. 5/22/2017 5/22/2017