SPECIFICATION FOR APPROVAL Customer： Description： Piezo Audio Transducer Sob erton Part No. ： PT-1407 Date：2009-08-05 Customer Model No. ： Date of Approval Authorization Signature 211 N. First Street Minneapolis, MN. 55401 612-849-6205 Http://www.sob erton.com E-mail： info@sob erton.com Approved Checked Issue WangXueWen ShiCong TangYuJing 07/21/07 07/21/07 07/21/07 Model No. SPECIFICATIONS PT-1407 1. ELECTRICAL AND ACOUSTICAL SPECIFICATION Item Unit Specifications Rated Voltage（Square Wave） Vp-p 5 1-2 Operating Voltage Vp-p 1-20 1-3 ＊Rated Current（Max） mA 2 1-4 ＊Min Sound Output at 10cm dB 80 1-5 ＊Resonant Frequency Hz 4000±500 1-6 1-7 Capacitance at 120Hz Operating Temperature pF 15000±30% ℃ -20~+70 1-8 Storage Temperature ℃ -30~+80 1-9 1-10 1-11 1-12 Weight Housing Material Lead Pin Material Tone Nature g 1 Black Noryl Red Copper Single 1-1 ＊Value Applying at Rated Voltage（resonant frequency，1/2 duty，square wave） Page Issue No Description 07/21/071/6 TangYuJing Date ShiCong WangXueWen Issue Check Approval Model No. SPECIFICATIONS PT-1407 2.ENVIRONMENTAL TEST Page Item 2-1 Storage in High temp. 2-2 Storage in Lower temp. 2-3 Storage in Humidity Storage in +80℃±2℃ test box for 240 hours，then expose to the room temperature for 2 hours without applying power. Storage in -30℃±2℃ test box for 240 hours ， then expose to the room temperature for 2 hours without applying power. Storage in +40℃±2℃ 90-95%RH test box for 48 hours, then expose to the room temperature for 2 hours without applying power. +80℃ -30℃ 2-4 +20℃ +20℃ Thermal cycle test. Make this test for 5 cycles without applying power, then expose to the room temperature for 2 hours. 2-5 Vibration test Make this test for the directions of X,Y, Z for 2 hours each (total 6 hours). 2-6 Drop test 2-7 Solderability Free drop a unit from the height 100cm to the surface of 10mm thick board ,three directions(X,Y,Z). test Soldering temp.:260±5℃ Heat applying time: 3±0.5sec. PASS CRITERION : After these tests , the change of S.P.L shall be within ±10 dB . Issue No Description 2/6 Specifications 07/21/07 TangYuJing ShiCong WangXueWen Date Issue Check Approval SPECIFICATIONS Model No. PT-1407 3.MEASURING METHOD(BUZZER MODE) 3-1 .Test Condition 3-1-1.STANDARD Temperature : 25±3℃ Relative humidity : 60% ~ 70%, Atmospheric pressure : 860mbar to 1060mbar 3-1-2.JUDGEMENT Temperature : 15 ~ 35℃ Relative humidity : 45% ~ 85%, Atmospheric pressure : 860mbar to 1060mbar. 3-2 . Standard Test Fixture 1.rated Voltage(Square wave):5V 2.Resonant Frequency:4000Hz Page Sound Level M etel 40cm ≥40cm 10cm Functional Singal G enerator Issue No Description 3/6 07/21/07 TangYuJing ShiCong WangXueWen Date Issue Check Approval Page SPECIFICATIONS Model No. PT-1407 5.DIMENSIONS Unless otherwise specified,tolerance:±0.5(unit: mm) Issue No Description 4/6 07/21/07 TangYuJing ShiCong WangXueWen Date Issue Check Approval Page SPECIFICATIONS Model No. PT-1407 6. WAVE SOLDER CURVE ( ) * Wave Soldering profile of lead-free Temp.(° C) Max. 10 sec. 250° C 245° C 235° C 200K/s--130° C ---5K/s 100° C ---forced cooling 50° C 0 0 50 100 150 200 250 300 Time(sec) Recommendable wave soldering condition is as follows. Note 1: It is requested that wave soldering should be executed after heat of product goes down to normal temperature. Note 2: Peak wave temperature of 235°C ~ 250° C maximum of 10 sec. . Issue No Description 5/6 07/21/07 TangYuJing ShiCong WangXueWen Date Issue Check Approval