27mm Piezo因素陶瓷的

Self-drive Piezoelectric Ceramic Element (Diameter 27mm by Thickness 0.2mm, 3.9kHz) 1, No minimum order requirement; 2, Make formula by ourselves; 3, Each procedure is under control. Main feature of Piezo Ceramic Element: -Extremely thin and light; -Low power consumption; -No EMI\RFI. Piezo Ceramic Element:Applications (Piezoceramics element; Piezodiaphragm, piezo plate) 1, For sound making:Clocks,Calculators,Telephones,Washing machines,Various(Burglar alarms,etc); 2, For transduction: Embryo monitor,Heart reflectoscope reflector,pedometer, car alarm sensor. Brief description of piezoceramic element&Attributive Characters: 1, Electrode form/ Modulating: External drive (diode); Self drive (transistor); 2, Thickness: Thick(T>0.5mm); Standard(0.5mm>T>0.2mm); Thin (T<0.2mm); Thinnest (0.03 0.05um); 3, Dimension: Smallestdiameter is8mm, Biggest is 65mm; 4,Metal plate types: Brass, Nickel, Stainless steel; 5,Connection terminal: Solder wire or not. Handing Notice: 1, Please do not touch the component with bare hand because electrode may be corroded. 2, The component may be damaged if mechanical stress exceeding specifications is applied. 3, Take care to protect operating circuit surge voltage resulting excessive force,falling,shock temperature change. 4, If DC voltage is applied to the component ,silver migration may occur .Please pay full attention to avoid subjecting. 5, Avoid excessive pulling lead wire because wire may break or soldering point may come off . 6, Applying Load on the center of the diaphragm may cause cracking in the ceramic elements .When the diaphragm is supported by the edge ,the load should be only applied around the edge. Soldering procedures: When using a soldering iron ,the optimum temperature for soldering a lead wire to a metal plate is 340°c±10°c for 1-2 second and the same temperature for the ceramic Silver electrode for 0.5 second or less. SWT piezo diaphragm’s excellences: 1, All the piezo diaphragm have our own intellectual property, own brand “SWT”. From the beginning of formula creation of the products to finished goods, all production procedure is proceeded and monitored in our factory. 2, Features of our products is with extremely clear sound, stable performance , good looking, high indemnification special in resistance of break, drop, ultrasonic weld attack. 3,We are a Hong Kong owned company and have the legal right to declaration transfers the factory and issue the 17% increment duty receip, Products can be exported from Hong Kong to world wide. Dongguan Sweet Sound Electronics Company Limited (SWT), a Hong Kong independently owned company was established in 1991 . Sweet Sound is a professional enterprise to research , produce and sell various piezoceramicselements , piezoelectricbuzzers , piezoelectric ultrasonic transducers and piezoelectric horns , electro-magnetic buzzers, piezoelectric buzzers, and speakers. The monthly output is 20 million pieces . Nowadays , it has about 500 employees , 6000M2 of manufacturing plant , and 200 sets of production and test facilities and instruments involving large scale automatic tunneling furnace. Sweet Sound has passed the ISO9001:2008& ISO14001:2004 and RoHS & REACH. There are 40 senior engineers working in our plant, have gained leading technical competence in design and production of piezoelectric material and acoustic components. Our products have been widely applied for various kinds of alarms, satellite receivers , microwave ovens, computers, calculators, digital cameras, electronic dictionaries, ultrasonic planimeters, medical devices, micro-displacement positioner, high voltage generator, facsimile machines, telephones, electronic toys and clocks, etc. Our products and service have won a very good reputation foralmost two decades. Contact person: Kevin Wang,Sherry Tan; Tel. No.:+86-0769-22620160; Website1:www.sweetsound.cn;Website 2: sweetsound.en.alibaba.com. Following are Our major cooperative customers: