ND411226

Overview

The ND411226 is a POW-R-BLOK Dual Diode Isolated Module manufactured by Powerex Inc. It features an isolated design suitable for rectification applications and easy mounting on common heatsinks. The module has a current rating of 260 Amperes and supports voltage ratings up to 2000 Volts. It contains two silicon rectifier diode elements configured in a series-connected, center-tap arrangement. The package utilizes an aluminum nitride isolator and compression bonded elements with a metal baseplate for low thermal impedance.

Feature Summary

• Electrically isolated heatsinking capability
• Aluminum nitride electrical isolator
• Compression bonded internal elements
• UL recognized safety certification

Applications

• Rectification circuits requiring isolated packaging
• Bridge circuits
• AC & DC motor drives
• Power supplies

Procurement Notes

Verify the specific voltage suffix against official datasheets, as the ND41__26 family spans multiple voltage ratings. Confirm RoHS compliance status and lead-free specifications prior to ordering. Ensure mechanical dimensions match the M8 thread requirements shown in outline drawings. Validate that the selected variant meets the required reverse voltage for the target application circuit.

Selection Notes

Select this component for high-current rectification where electrical isolation from the heatsink is mandatory. The dual diode configuration supports center-tap topologies. Verify thermal management requirements align with the module's low thermal impedance characteristics. Ensure the operating temperature range accommodates the maximum junction temperature limits specified in the technical documentation.

Part Context

This part belongs to the POW-R-BLOK family of high-power diode modules designed for industrial power conversion. The ND41__26 series specifically addresses applications needing 260 Ampere continuous current handling. These modules are engineered for robust performance in demanding environments, utilizing advanced bonding techniques to ensure reliability under high thermal cycling conditions.

Replacement Considerations

Consult official cross-reference lists for direct substitutes. Verify pinout compatibility and thermal interface dimensions before replacing existing units. Ensure replacement parts maintain equivalent isolation voltage and current carrying capabilities.