C440B

Scrs Overview

The C440B is a standard recovery phase control silicon controlled rectifier (SCR) manufactured by Powerex Inc. It features a Press-Pak (Pow-R-Disc) chassis mount package, specifically the B-PUK (TO-200AC) form factor. The device is rated for a maximum off-state voltage of 200 V and supports an average on-state current of 900 A with a root-mean-square current capacity of 1400 A. Key electrical parameters include a maximum gate trigger voltage of 5 V and a maximum gate trigger current of 150 mA. The component operates within a junction temperature range of -40°C to 125°C and exhibits a maximum on-state voltage of 1.65 V.

Scrs Feature Summary

• Standard recovery thyristor construction optimized for phase control applications
• Robust Press-Pak chassis mount design ensuring reliable thermal dissipation
• High surge current capability supporting demanding industrial loads

Scrs Applications

• Industrial motor drives and variable frequency drive systems
• DC power supply regulation and control circuits
• Battery charging equipment and power management systems

Scrs Procurement Notes

Verify that the specific order matches the C440B part number, distinguishing it from other variants in the C440 series such as C440N or C440D which possess different voltage ratings. Confirm the requirement for the TO-200AC (B-PUK) package style. Ensure compatibility with the specified 200V off-state voltage rating for the target circuit design before finalizing procurement.

Scrs Selection Notes

Select the C440B when the application requires a 200V blocking capability combined with high continuous current handling up to 900A. This component is suitable for low-voltage, high-current phase control scenarios where standard recovery characteristics are sufficient. Consider the chassis mounting requirements and thermal interface needs associated with the Press-Pak format during system integration.

Scrs Part Context

The C440B belongs to the C440 family of high-power SCRs produced by Powerex Inc. This series utilizes the Pow-R-Disc technology to provide efficient heat transfer through the baseplate. While sharing similar current ratings and package styles with other members like the C440N, the C440B is specifically differentiated by its lower 200V voltage rating compared to higher voltage variants in the lineup.

Scrs Replacement Considerations

Direct substitutes within the same family include the C440N (800V) and C440D (400V), provided the circuit voltage allows for derating. Cross-manufacturer replacements require matching the 200V/900A rating and TO-200AC package dimensions. Verify thermal resistance and gate trigger parameters when considering alternative brands.