This document describes the features and characteristics of the ST083S series inverter grade thyristors, including features like center amplifying gate, high surge current capability, low thermal impedance, and high speed performance. It is suitable for inverters, choppers, induction heating, and all types of force-commutated converters. It has a rated current of 85A and a maximum voltage of 400 to 1200V.
This document provides technical data for the International Rectifier ST083S Series Inverter Grade Thyristors (Stud Version). It covers major ratings such as a maximum average on-state current of 85A and voltage ranges from 400V to 1200V. The series is designed for applications including inverters, choppers, induction heating, and force-commutated converters.
The datasheet details electrical specifications including voltage ratings, current carrying capabilities at various frequencies, on-state conduction parameters, switching times, blocking characteristics, and triggering requirements. It also includes thermal resistance values, mechanical mounting torque, and ordering information with device codes.
| Maximum average on-state current (Iav) | 85 A |
|---|---|
| Maximum RMS on-state current (Irms) | 135 A |
| Maximum peak non-repetitive surge current (Ism) | 2450 A |
| Voltage range (Vorw/Vrrw) | 400 to 1200 V |
| Maximum junction operating temperature (Tj) | -40 to 125 °C |
| Case style | TO-209AC (TO-94) |
| Maximum thermal resistance, junction to case (RthJC) | 0.195 K/W |
Typical applications include inverters, choppers, induction heating, and all types of force-commutated converters.
The maximum average on-state current (Iav) at 180° conduction and half sine wave is 85 A.
The device uses a TO-209AC (TO-94) ceramic housing.