北京天拓文仪科技有限公司

通信器材：转换器、接收器、振荡器、天线 Telecom:transmitter.receiver.oscillator.antenna 卫星接收器 Satellite receiver 全球定位系统、功率放大器、卫星通信 Global LOCAIION system、amplifier.satellite telecom 微波传输 Microwave transmission 汽车电话 Automobile telephone 测量仪器、LSI检验器、分析器、信号振荡器 Measure apparatus.LSI inspector.analyser.signal 　oscillator 高频通信、高速传输、高保密性、高传送质 量、高记忆容量处理 High frequency telecom.high speed transmission high security. high transmission quality.high memory transaction 性能指标Specification 单双面Teflon PCB Single.double Sided Teflon PCB NPTH、PTH 线宽控制 Conductor width control: ±0.02mm 孔内铜厚度 Hole wall copper ≥ 20μм 热冲击 Thermal stress 288°C.10sec. 介电常数 Permitivity ε2.1-10.0 冲或铣外型公差 Profile:punching or routing.tolerance ±0.10.0-0.13mm 成品板厚 final product thickness 0.5,0.8,1.0,1.2,1.6mm 基铜厚度 Base copper thickness Normal 0.5 1.0 OZ 阻焊膜 Solder Mask Taiyo PSR4000.Tamura DSR2200 线路上阻焊膜厚度 Solder mask thickness on tracks 20-30 μм