MD18200S-BM2MM

Overview

The Littelfuse MD18200S-BM2MM is a general-purpose rectifier diode module designed for high-power applications. It features a reverse standoff voltage of 1800V and an average forward current rating of 200A. The device utilizes an S-3 module package with chassis mounting capabilities. Key electrical parameters include a maximum forward voltage of 1.5V and a peak forward surge current capacity of 7kA. The component operates within a junction temperature range up to 150°C, providing robust performance for industrial power conversion systems requiring reliable high-voltage rectification.

Feature Summary

• High voltage blocking capability suitable for demanding power electronics environments
• Robust thermal management through dedicated chassis mounting interface
• High surge current tolerance ensuring protection against transient overloads

Applications

• Industrial motor drive rectification circuits
• DC power supply input stages
• Welding equipment power modules

Procurement Notes

Verify the specific suffix BM2MM against official Littelfuse documentation to confirm pinout and mechanical dimensions. Check lifecycle status as some sources indicate obsolete classification. Ensure compatibility with existing heatsink interfaces due to the S-3 module form factor. Request updated datasheets directly from authorized distributors to confirm current manufacturing availability and exact specifications.

Selection Notes

Select this module when applications require 1800V isolation and 200A continuous current handling in a compact chassis-mount format. Compare forward voltage drop characteristics against alternative series-connected diodes to optimize efficiency. Consider thermal resistance values relative to the intended cooling solution. Validate that the 7kA surge rating exceeds the system's expected fault currents to ensure adequate safety margins during startup or short-circuit events.

Part Context

This component belongs to Littelfuse's S-Series rectifier module family, which offers various voltage and current combinations for power conversion needs. The S-3 package provides a standardized footprint for easy integration into existing power boards. Similar models in the series may differ in current ratings or voltage thresholds while maintaining compatible mounting styles.

Replacement Considerations

Direct substitutes include MD18180S-BM2MM and MD18160S-DKM2MM from the same manufacturer. Verify that alternative part numbers match the required 1800V rating and sufficient current capacity. Confirm mechanical compatibility with the S-3 module housing before implementation.