概述Description 

 QX452 是一款由发光二极管和达林顿晶体管组成的高耐压(VCEO≥350V)光电耦合器。四引脚封装（SOP4）。

 The QX452 is a photoelectric coupler composed of light-emitting diode and darlington transistor. It is packaged in a 4-pin SOP package.

 特性Features 

  电流转换比(CTR)范围:CTR≥1000% (IF=1mA, VCE=2V, Ta=25℃) Current transfer ratio: CTR≥1000% (IF=1mA, VCE=2V, Ta=25℃) 

  输入-输出隔离电压(VISO=3750Vrms ) High isolation voltage between input and output(VISO=3750 Vrms ) 

  爬电距离≥5mm Creepage distance≥5mm  外部电气间隙≥5mm External electrical clearance≥5m 

  DIT≥0.4mm

可替代 TLP187 TLP127 PC452 SFH692AT

  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.