概述Description 

 QX851是一款由发光二极管和光电晶体管组成的高耐压(VCEO≥350V)光电耦合器。四引脚封装，三种形式 （DIP,DIP-M,SMD）。 The QX851 is a photoelectric coupler composed of light-emitting diode and phototransistor. It is high voltage resistance(VCEO≥350V). It is packaged in a 4-pin small outline SOP package of three forms such as DIP、DIP M、SMD. 

特性Features

  电流转换比(CTR)范围:50%~600% (IF=5mA, VCE=5V) Current transfer ratio: 50%~600% (IF=5mA, VCE=5V)

 输入-输出隔离电压(VISO=5000 Vrms ) High isolation voltage between input and output(VISO=5000 Vrms ) 

  集电极-发射极击穿电压BVCEO≥350V Collector- emitter breakdown voltage BVCEO≥350V 

  工作温度：-55℃~+100℃ Operating Temperature:-55℃~+100℃ 

  符合加强绝缘标准 Meet reinforced insulation standards  符合安规标准：UL1577，VDEDINEN60747-5-5 (VDE 0884-5），CQC11-471543-2022 Meet safety standard approval: UL 1577, VDE DIN EN60747-5-5 (VDE 0884-5），CQC11-471543-2022

开关电源，智能电表 Switching power supply, intelligent meter
 工业控制，测量仪器 Industrial control, measuring instruments
  办公设备，比如复印机 Office equipment such as copiers 
  家用电器，比如空调、风扇、热水器等 Household appliances: such as air conditioners, fans, water heaters, etc