AN302晶闸管和双向晶闸管：保持电流-一个重要参数

AN302晶闸管和双向晶闸管：保持电流-一个重要参数

AN302
Application note

Thyristors and TRIACs: holding current - an important parameter

Introduction
The purpose of this note is to familiarize the users of TRIACs or thyristors with the
hypostatic current parameter, IH, also known as the holding current parameter.
The importance of this parameter is illustrated by some typical examples. Then a description
is given of how to measure it and on its variation with the conditions of use and the
sensitivity of the components.
This application note discusses only the TRIAC; however, the concepts are a