EFM-250DN

Product Specification Ningbo East Electronics Limited NO. 88 East Jinhui Road,Yinzhou Ningbo 315100,P.R.China http://www.east-mingtao.com Product Name: External External-- Driven Piezo Transducer Part Number: Version: Date: EFM EFM-- 250DN 1.02 2019 2019-- 8 - 20 Note: East is an ISO 9001 , IATF16949 and ISO 14001Certified Company Revision History Rev. Description Author/Date Checked By Approver 1.02 Quality management system revised 汤礼东 2019-8-20 吕文斌 王建成 1.01 Quality Certificate Symbol revised 吕文斌 2015-1-31 汤礼东 王建成 1.0 Released 汤礼东 2011-12-9 张春雷 王建成 Ningbo East Electronics Limited 1/5 1. Part Number EFM-250DN 2. Dimension Drawing (Unit: mm) 3.Specification No. Item Specification 3-1 Min. Sound Pressure Level 80dB/4.1kHz/9Vp-p square wave /10cm 3-2 Allowed Input Voltage 20Vp-p 3-3 Capacitance 10±30%nF(At 120Hz) 3-4 Max. Consumption 2mA/4.1kHz/9Vp-p square wave 3-5 Resonant Frequency 4.1± 0.5kHz 3-6 Operating Temperature -20~+85℃ 3-7 Case Material /Color PC/Black 3-8 Weight 0.9g 3-9 Pin Strength More than 10N NOTES： Test should be made under the conditions of room temperature (20±10℃), normal humidity (60±20%) and normal atmospheric pressure. In this case, however, that the judgment is questionable, the test conditions are to be changed to room temperature 20±2℃, relative humidity 60~70% and normal atmospheric pressure Ningbo East Electronics Limited 2/5 4.Typical Frequency Response Curve Note: Input Voltage 9Vp-p square wave Distance 10 cm 5. Reliability Test No. Item 5-1 Operating Temperature -20~+85℃ 5-2 Storage in high temperature Storage in +85℃ test box 96 hours then exposed to the room temperature for 2 hours 5-3 Storage in low temperature Storage in -20℃ test box 96 hours then exposed to the room temperature for 2 hours 5-4 Life test in the room Operate the product continuously 5 seconds on 5 seconds off temperature 300 hours at rated voltage 5-5 Temperature / humidity cycle test Storage in +40℃, 93±3%RH test box 96 hours then exposed to the room temperature for 2 hours 5-6 Temperature (high and low) cycle test Conduct the test for 5 cycles without applying power then expose to the room temperature for 2 hours.(See Figure 5-6) Vibration test Conduct the test for the directions of X Y and Z for 0.5 hour each (total 1.5 hours). To-and Fri sweep time(from 10 to 55Hz and then 55 to 10) under single amplitude of 0.75mm is 3 minute, then expose to the room temperature for 2 hours 5-7 Ningbo East Electronics Limited Method of Test Tolerance after Testing Sound pressure level initial value ±10dB Max. consumption value ±20% Resonant Frequency value ±20% 3/5 5-8 Drop test Drop a product naturally from the height of 700mm onto the surface of 100mm thick wooden board. Two directions: upper and side of the product are to be applied for this drop test once respectively 5-9 Soldering heat resistance test Dip the connecting pins in soldering at 260±5℃ for 10±1 seconds 5-10 Test of soldering Dip the connecting pins in soldering at 230±5℃ for 3±0.5 seconds Solder shall be attached around over 95% of the dipped portion NOTE: The pins are allowed to deform after drop test. Figure 5-6 Ningbo East Electronics Limited 4/5 6. Electrical Testing Method S.P.L.M Sound Pressure Level Meter T.S Testing Sample F.C Frequency Counter F.S.G Frequency Signal Generator A.V.M AC Voltage Meter A.A.M AC Ampere Meter 7. Packing Information Packing: 5000 pcs per export carton Carton Size: 47× 30.5× 33 cm G. Weight: 6.0 kgs N. Weight: 4.3 kgs Ningbo East Electronics Limited 5/5