■PTC 热敏电阻器

PTC THERMISTOR

PTC 是指正温度系数热敏电阻，它是一种典型具有温度敏感性的半导体电阻，超过一定的温度

（居里温度）时，它的电阻值随着温度的升高呈阶跃性的增高。

PTC is a positive temperature coefficient thermistor. It is a typical semiconductor resistance with temperature sensitivity. When the temperature exceeds a certain temperature (Curie temperature), its resistance value increases with

the increase of temperature. 

◆特性 Feature

*α系数高

High ageing cofficient *体积小、耐电压强度高

Small size, Superior withstanding voltage

*反应速度快

Fast reaction time

*可靠性高、工作寿命长

High reliability、Long operating life

◆应用 Application

*过压、过流、过载等保护，主要用于电力变压器、各种充电器、各种仪器仪表等过流过热保护的场合

Overvoltage, overcurrent and overload protection,Mainly used for power transformers, various chargers, various

instruments and other over current, overheating protection occasions

*电机、马达、压缩机等启动辅助

Motor, compressor startup assistance

*电机过热保护、电烙铁恒温维护、灯丝预热延时启动、LED 恒流补偿等多种功能

Motor overheating protection, electric iron constant temperature maintenance, filament preheating delay start, LED

constant current compensation and other functions