MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Silicon Controlled Rectifiers
Reverse Blocking Thyristors
. . . designed primarily for half-wave ac control applications, such as motor controls,
heating controls and power supply crowbar circuits.
• Glass Passivated Junctions with Center Gate Fire for Greater Parameter Uniformity
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
Order this document
by MCR225FP/D
MCR225FP
Series
ISOLATED SCRs
25 AMPERES RMS
50 thru 800 VOLTS
G
AK
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)
(TJ = –40 to +125°C, Gate Open)
MCR225-2FP
MCR225-4FP
MCR225-6FP
MCR225-8FP
MCR225-10FP
VDRM
VRRM
50
200
400
600
800
Volts
On-State RMS Current (TC = +70°C) Full Cycle Sine Wave 50 to 60 Hz(2)
IT(RMS)
25
Amps
Peak Non-repetitive Surge Current (One Full Cycle, 60 Hz, TC = +70°C)
Preceded and followed by rated current
ITSM 300 Amps
Circuit Fusing (t = 8.3 ms)
I2t 375 A2s
Peak Gate Power (TC = +70°C, Pulse Width = 10 µs)
Average Gate Power (TC = +70°C, t = 8.3 ms)
Peak Gate Current (TC = +70°C, Pulse Width = 10 µs)
pRMS Isolation Voltage (TA = 25°C, Relative Humidity 20%)
Operating Junction Temperature Range
Storage Temperature Range
PGM
PG(AV)
IGM
V(ISO)
TJ
Tstg
20
0.5
2
1500
–40 to +125
–40 to +125
Watts
Watt
Amps
Volts
°C
°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.
Motorola Thyristor Device Data
© Motorola, Inc. 1995
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