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MCR8SMG
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Product Detailed Parameters
- Description：SCR 600V 8A TO220AB
- Series：-
- Mfr：Littelfuse Inc.
- Package：Box
- Voltage - Off State：600 V
- Voltage - Gate Trigger (Vgt) (Max)：1 V
- Current - Gate Trigger (Igt) (Max)：200 µA
- Current - Hold (Ih) (Max)：6 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：80A @ 60Hz
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°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)：8:00 AM
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse MCR8SMG is a sensitive gate silicon controlled rectifier with a peak repetitive off-state voltage of 600 V. It supports an on-state RMS current of 8.0 A at 80°C and handles a peak non-repetitive surge current of 80 A. The device features a TO-220AB package with glass passivated junctions, operating within a junction temperature range of -40 to 110°C. Key electrical characteristics include a maximum gate trigger current of 200 µA, a holding current of 6.0 mA, and a minimum dv/dt immunity of 5.0 V/µs at 110°C.
Feature Summary
- Sensitive gate design enables direct triggering by microcontrollers and logic circuits
- Glass passivated junctions provide reliability and uniformity
- Specified minimum and maximum values for IGT, VGT, and IH facilitate ease of design
Applications
- Half-wave AC control applications
- Motor controls
- Heating controls
- Power supplies
Procurement Notes
Verify the specific part number suffix against official Littelfuse documentation to confirm the exact voltage rating and package configuration. Ensure that the procurement channel provides genuine components with traceable manufacturing data. Confirm RoHS compliance status and packaging quantities directly with the supplier or manufacturer before finalizing orders.
Selection Notes
Select the MCR8SMG when a 600 V blocking voltage and 8 A RMS current capacity are required in a TO-220AB package. Consider this component for designs needing sensitive gate triggering from low-power logic sources. Evaluate thermal management requirements based on the specified junction-to-case thermal resistance and derating curves for the intended operating environment.
Part Context
The MCR8SMG belongs to the MCR8S series of sensitive gate SCRs manufactured by Littelfuse. This series includes variants with different voltage ratings, such as the MCR8SDG (400 V) and MCR8SNG (800 V). All models share the same physical package and general functional characteristics, differing primarily in their peak repetitive off-state voltage specifications.
Replacement Considerations
Direct replacements must match the 600 V rating, 8 A RMS current, and TO-220AB package. Verify that substitute devices offer comparable sensitive gate characteristics and dv/dt immunity. Cross-reference datasheets for thermal resistance and pinout compatibility to ensure seamless integration into existing half-wave AC control circuits.
