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Product Detailed Parameters
- Description:SCR 600V 25A TO220AB
- Series:-
- Mfr:Littelfuse Inc.
- Package:Box
- Voltage - Off State:600 V
- Voltage - Gate Trigger (Vgt) (Max):1 V
- Current - Gate Trigger (Igt) (Max):30 mA
- Current - Hold (Ih) (Max):40 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):300A @ 60Hz
- SCR Type:Standard Recovery
- Operating Temperature:-40°C ~ 125°C
- Mounting Type:Through Hole
- Package / Case:TO-220-3
- Supplier Device Package:TO-220AB
- Voltage - On State (Vtm) (Max):1.8 V
- Current - On State (It (AV)) (Max):-
- Current - On State (It (RMS)) (Max):25 A
- Current - Off State (Max):10 µA
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Overview
The Littelfuse MCR25MG is a silicon-controlled rectifier (SCR) housed in a TO-220AB package. It features a peak repetitive off-state voltage of 600 V and an on-state RMS current rating of 25 A at a case temperature of 80°C. The device supports a peak non-repetitive surge current of 300 A and operates within a junction temperature range of -40°C to 125°C. Electrical characteristics include a maximum gate trigger current of 30 mA, a holding current of 40 mA, and a critical rate of rise of off-state voltage of 100 V/µs at 125°C. Thermal resistance from junction to case is 1.5 °C/W.
Feature Summary
- Glass passivated junctions for reliability and uniformity
- Specified minimum and maximum values for gate trigger current, gate trigger voltage, and holding current
- High immunity to dv/dt with a minimum rating of 100 V/µsec at 125°C
Applications
- Half-wave AC control applications
- Motor controls
- Heating controls
- Power supplies
Procurement Notes
Verify the specific part number against official Littelfuse documentation to confirm the 600V blocking voltage rating associated with the MCR25MG suffix. Ensure that the TO-220AB package dimensions and lead configuration match the required PCB layout specifications before finalizing procurement decisions.
Selection Notes
Select this component when a 600V blocking voltage and 25A continuous current capacity are required in a TO-220AB form factor. Consider the specified thermal resistance and derating curves for proper heat sink sizing. Verify that the gate drive circuitry can supply the necessary trigger current and voltage levels defined in the electrical characteristics table.
Part Context
The MCR25MG belongs to the MCR25DG, MCR25MG, and MCR25NG family of silicon-controlled rectifiers. These devices share identical physical packages and current ratings but differ in their peak repetitive off-state voltage capabilities, which are 400V, 600V, and 800V respectively. This family is designed for rugged, economical half-wave AC control applications.
Replacement Considerations
MCR25DG and MCR25NG are direct pin-compatible alternatives within the same series, differing only in voltage ratings.
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