SPECIFICATION FOR APPROVAL Customer： Description： Piezo Audio Transducer Sob erton Part No. ： PT-1625 Date：2007-11-25 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 Ryan Wang Cheng Song Qi 2007/11/29 2007/11/29 2007/11/29 Model No. SPECIFICATIONS PT-1625 1. ELECTRICAL AND ACOUSTICAL SPECIFICATION Item Unit Specifications Rated Voltage（Square Wave） Vp-p 3.0 1-2 Operating Voltage Vp-p 3-25 1-3 ＊Rated Current（Max） mA 1 1-4 ＊Min Sound Output at 4.0kHz/10cm dB 73 1-5 ＊Resonant Frequency Hz 4000±500 1-6 1-7 Capacitance at 120Hz Operating Temperature pF 15000±30% ℃ -20~+75 1-8 Storage Temperature ℃ -40~+85 1-9 1-10 1-11 1-12 Weight Housing Material Pin Type Tone Nature g 1.0 Black LCP SMD Single 1-1 ＊Value Applying at Rated Voltage（resonant frequency，1/2 duty，square wave） Page Issue No Description 11/25/07 1/6 Song Qi Wang Cheng Date Ryan Issue Check Approval Model No. SPECIFICATIONS PT-1625 2.ENVIRONMENTAL TEST Page Item 2-1 Storage in High temp. 2-2 Storage in Lower temp. 2-3 Storage in Humidity Storage in +85℃±2℃ test box for 120 hours，then expose to the room temperature for 2 hours without applying power. Storage in -40℃±2℃ test box for 120 hours ， then expose to the room temperature for 2 hours without applying power. Storage in +40℃±2℃ 90-95%RH test box for 120 hours, then expose to the room temperature for 2 hours without applying power. +85 -40 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.:235±5℃ Heat applying time: 2.0±0.5sec. PASS CRITERION : After these tests, the change of S.P.L shall be within ±5 dB . Issue No Description 2/6 Specifications 11/25/07 Song Qi Wang Cheng Ryan Date Issue Check Approval SPECIFICATIONS Model No. PT-1625-P 3.MEASURING METHOD 3-1 .Test Condition 1. STANDARD Temperature : 25±3℃ Relative humidity : 60% ~ 70%, Atmospheric pressure : 860mbar to 1060mbar 2. JUDGEMENT Temperature : 15 ~ 35℃ Relative humidity : 45% ~ 85%, Atmospheric pressure: 860mbar to 1060mbar. 3-2. Standard Test Fixture 1. Rated Voltage(Square wave): 3.0V 2. Resonant Frequency: 4000Hz Page Issue No Description 3/6 11/25/07 Song Qi Wang Cheng Ryan Date Issue Check Approval SPECIFICATIONS Model No. PT-1625 6.DIMENSIONS Unless otherwise specified, tolerance: ±0.2 (unit: mm) 1）All parts must be meet to ROHS. 2）Wave solder allowed，wash not allowed. Page Issue No Description 5/6 11/25/07 Song Qi Wang Cheng Ryan Date Issue Check Approval SPECIFICATIONS Model No. PT-1625 7.PACKING Page Issue No Description 6/6 11/25/07 Song Qi Wang Cheng Ryan Date Issue Check Approval