ST300S Series 1 is a 300A phase control thyristor with a center amplifying gate, ceramic insulator metal case, international standard case TO-209AE (TO-118), UNF 3/4-16UNF2A or ISO M24x1.5 threaded studs, for heavy-duty operations such as severe thermal cycling. Typical applications include DC motor controls, controlled DC power supplies, AC controllers.
This document provides technical specifications for the International Rectifier ST300S Series Phase Control Thyristors in a stud version. Key features include a center amplifying gate, a hermetic metal case with ceramic insulator (TO-209AE/TO-118), and compression bonded encapsulation designed for heavy-duty operations such as severe thermal cycling.
The datasheet details major ratings including 300A current capacity, voltage ranges from 400V to 2000V, and operating temperatures between -40°C and 125°C. It includes comprehensive electrical specifications for on-state conduction, switching characteristics, blocking capabilities, and thermal resistance values.
| Max. average on-state current | 300 A |
|---|---|
| Max. RMS on-state current | 470 A |
| Max. peak non-repetitive surge current (50Hz) | 8000 A |
| Voltage range | 400 to 2000 V |
| Operating temperature range | -40 to 125 °C |
| Case style | TO-209AE (TO-118) |
Typical applications include DC motor controls, controlled DC power supplies, and AC controllers.
The maximum operating temperature range is from -40 to 125 °C.
The device uses a hermetic metal case with ceramic insulator, specifically TO-209AE (TO-118).