Motorola Thyristor is a reverse blocking thyristor designed primarily for half-wave AC control applications, such as motor controls, heating controls, and power supply crowbar circuits. It features glass passivated junctions with center gate fire for greater parameter uniformity and stability. The device is small, rugged, and thermally efficient, allowing for low thermal resistance, high heat dissipation, and durability. It has a blocking voltage of up to 800 volts and can withstand surge currents of 300 amps. The insulated package simplifies mounting.
This document provides technical data for the Motorola MCR225FP Series Reverse Blocking Thyristors, which are designed primarily for half-wave AC control applications such as motor controls, heating controls, and power supply crowbar circuits. Key features include glass passivated junctions for parameter uniformity and a rugged thermowatt construction for high heat dissipation.
The datasheet specifies maximum ratings including a blocking voltage up to 800 Volts and a peak non-repetitive surge current of 300 Amps. It details electrical characteristics such as gate trigger current and voltage, thermal resistance values, and typical performance curves for average current and power dissipation. Package dimensions for Case 221C-02 are also provided.
| On-State RMS Current | 25 Amps |
|---|---|
| Peak Non-repetitive Surge Current | 300 Amps |
| Thermal Resistance Junction to Case | 1.5 °C/W |
| Gate Trigger Current (Max) | 40 mA |
| Operating Junction Temperature Range | -40 to +125 °C |
They are designed primarily for half-wave AC control applications, such as motor controls, heating controls, and power supply crowbar circuits.
The devices are housed in Case 221C-02 Style 2 Isolated SCRs.