Description

The thyristor is a four-layered, three terminal semiconducting device, with each layer consisting of alternately N-type or P-type material, for example P-N-P-N. The main terminals, labelled anode and cathode, are across the full four layers, and the control terminal, called the gate, is attached to p-type material near to the cathode. (A variant called an SCS—Silicon Controlled Switch—brings all four layers out to terminals.) The operation of a thyristor can be understood in terms of a pair of tightly coupled bipolar junction transistors, arranged to cause the self-latching action:

(Thyristor-Thyristor Module)
RXKT*0     ITAV=*0A,VRRM/VDRM=***0V/***0V
RXKT**0  ITAV=**0A,VRRM/VDRM=***0V/***0V
RXKT**0   ITAV=**0A,VRRM/VDRM=***0V/***0V
RXKT**5  ITAV=**5A,VRRM/VDRM=***0V/***0V
RXKT**0H ITAV=**0A,VRRM/VDRM=***0V
RXKT**5H ITAV=**5A,VRRM/VDRM=***0V