CM4312A2

SCRs - Modules Overview

The Powerex CM4312A2 is a dual silicon-controlled rectifier (SCR) module within the POW-R-BLOK series, rated for 1200V and 25A average on-state current. It features an isolated metal baseplate design suitable for phase control applications. Key electrical parameters include a peak forward blocking voltage of 1200V, RMS on-state current of 39A, and peak one-cycle surge current of 490A at 60Hz. The device operates within a junction temperature range of -40°C to 125°C and provides 2500Vrms isolation between terminals and the mounting base.

SCRs - Modules Feature Summary

• Isolated packaging allows direct mounting to common heatsinks without additional insulators
• Glass passivated chips provide enhanced reliability and protection against environmental factors
• Metal baseplate construction ensures low thermal impedance for efficient heat dissipation

SCRs - Modules Applications

• Battery supplies
• Bridge circuits
• AC and DC motor control
• Tap changers
• Lighting control

SCRs - Modules Procurement Notes

Verify the specific voltage rating required for your application before ordering. The CM4312A2 is designated as the 1200V variant; ensure this matches your system's peak forward blocking voltage requirements. Confirm that the 25A average current rating aligns with your thermal management capabilities and expected load conditions.

SCRs - Modules Selection Notes

Select this module when phase control and electrical isolation are required in high-power environments. Consider the 1200V rating versus the 1600V alternative based on circuit voltage stress. Ensure the mounting torque specifications are strictly followed to maintain mechanical integrity and optimal thermal contact with the heatsink.

SCRs - Modules Part Context

This component belongs to the Powerex Dual SCR POW-R-BLOK Modules family, specifically designed for robust industrial power conversion. The series offers standardized dimensions and mounting configurations to simplify integration into existing power electronics designs requiring reliable thyristor solutions.

SCRs - Modules Replacement Considerations

The CM4312A2 shares the same physical outline and pinout with the CM4316A2, which differs only in its higher 1600V voltage rating. Verify that the lower voltage rating of the CM4312A2 is sufficient for your specific circuit peaks before substituting.