MOTOROLA MCR225FP Series Data Handbook
Summary
This ruggedized thyristor is engineered for robust half-wave AC power control in industrial applications, including motor controls, heating elements, and isolated SCR circuits. Designed for dependability, it features high blocking voltage (up to 800V) and superior thermal dissipation capability. The accompanying technical manual provides comprehensive electrical and thermal data—including detailed curves and maximum ratings—making it an essential resource for professional engineers and system designers requiring reliable AC switching solutions.
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SEMICONDUCTOR TECHNICAL DATA by MCR225FP/D
Reverse Blocking Thyristors . . . designed primarily for half-wave ac control applications, such as motor controls,
ISOLATED SCRs
heating controls and power supply crowbar circuits.
25 AMPERES RMS
Glass Passivated Junctions with Center Gate Fire for Greater Parameter Uniformity
600 thru 800 VOLTS
and Stability Small, Rugged, Thermowatt Constructed for Low Thermal Resistance, High Heat Dissipation and Durability Blocking Voltage to 800 Volts 300 A Surge Current Capability Insulated Package Simplifies Mounting
CASE 221C-02 STYLE 2
MAXIMUM RATINGS (TJ = 25°C unless otherwise noted.)
Rating Symbol Value Unit
Peak Repetitive Forward and Reverse Blocking Voltage(1) VDRM Volts (TJ = –40 to +125°C, Gate Open) VRRM
MCR225-8FP MCR225-10FP
On-State RMS Current (TC = +70°C) Full Cycle Sine Wave 50 to 60 Hz(2) IT(RMS) Amps Peak Non-repetitive Surge Current (One Full Cycle, 60 Hz, TC = +70°C) ITSM Amps Preceded and followed by rated current Circuit Fusing (t = 8.3 ms) I2t A2s Peak Gate Power (TC = +70°C, Pulse Width = 10 µs) PGM Watts Average Gate Power (TC = +70°C, t = 8.3 ms) PG(AV) 0.5 Watt Peak Gate Current (TC = +70°C, Pulse Width = 10 µs) IGM Amps RMS Isolation Voltage (TA = 25°C, Relative Humidity 20%) V(ISO) Volts Operating Junction Temperature Range TJ –40 to +125 °C Storage Temperature Range Tstg –40 to +125 °C 1. VDRM and VRRM for all types can be applied on a continuous basis. Ratings apply for zero or negative gate voltage; however, positive gate voltage shall not be applied concurrent with negative potential on the anode. Blocking voltages shall not be tested with a constant current source such that the voltage ratings of the devices are exceeded. 2. The case temperature reference point for all TC measurements is a point on the center lead of the package as close as possible to the plastic body.
REV 1
1Motorola Thyristor Device Data
Motorola, Inc. 1999
Page Summary Contents For MOTOROLA MCR225FP Series Data Handbook
Manual Details
| Brand | Motorola |
|---|---|
| Pages | 6 |
| File Size | 95.51 KB |
| Published | June 02, 2026 |
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Frequently Asked Questions
What types of applications is the MCR225FP/D designed for?
It is primarily designed for half-wave AC control applications, such as motor controls or power supply crowbar circuits.
What is the maximum sustained RMS current rating?
The device has an On-State RMS Current capability of 25 Amps. However, average currents are subject to derating factors.
What is the specified operating junction temperature range?
Both the operating and storage junction temperature ranges are –40 to +125 °C.
Are there specific safety limits when testing blocking voltages?
Blocking voltages shall not be tested with a constant current source such that the voltage ratings of the devices are exceeded.