MCR25M

Scrs Overview

The MCR25MG is a Silicon Controlled Rectifier (SCR) manufactured by onsemi, designed for half-wave AC control applications. It features an RMS on-state current rating of 25 Amperes and offers peak repetitive off-state voltage options ranging from 400 to 800 Volts, with the MGR variant specifically rated at 600 Volts. The device supports a high surge current capability of 300 Amperes and operates within a junction temperature range of -40°C to +125°C. Packaged in a rugged TO-220AB case, it includes glass passivated junctions for reliability.

Scrs Feature Summary

• High surge current capability of 300 Amperes
• Glass passivated junctions for uniformity and reliability
• Rugged TO-220AB package design
• Specified minimum and maximum gate trigger values

Scrs Applications

• Motor controls
• Heating controls
• Power supplies

Scrs Procurement Notes

Verify the specific voltage suffix (D, M, or N) required for your circuit's blocking voltage needs before ordering. Confirm that the TO-220AB through-hole package aligns with your PCB layout constraints. Ensure thermal management strategies account for the specified junction-to-ambient resistance during continuous operation.

Scrs Selection Notes

Select the MCR25MG when a 600V blocking voltage is necessary alongside a 25A RMS current capacity. Consider the device's dv/dt immunity characteristics for noisy environments. Evaluate the gate trigger current specifications against your driving circuit capabilities to ensure reliable turn-on across the full operating temperature range.

Scrs Part Context

This component belongs to the MCR25 series of reverse blocking thyristors. It shares the same physical package and current ratings as the MCR25DG and MCR25NG variants, differing primarily in their peak repetitive off-state voltage ratings. The series is engineered for robust performance in industrial power control scenarios.

Scrs Replacement Considerations

Direct functional substitutes include the MCR25DG (400V) and MCR25NG (800V), provided the voltage rating meets the application requirements. Verify pinout compatibility and thermal resistance specifications when cross-referencing with other manufacturers' SCR offerings.

Scrs FAQ

What is the critical rate of rise of off-state voltage (dv/dt) for this device?

The minimum dv/dt rating is 100 V/µs at a junction temperature of 125°C.

Does the MCR25MG support lead-free soldering processes?

Yes, the device is Pb-Free and compliant with RoHS standards.

What is the maximum non-repetitive surge current capability?

The device can withstand a peak non-repetitive surge current of 300 Amperes for a 1/2 cycle at 60 Hz.