ND411735

Overview

The Powerex ND411735 is a dual diode isolated POW-R-BLOK module rated for 350 Amperes and up to 1700 Volts. It features series-connected center-tap configuration with two silicon elements. Key electrical parameters include a repetitive peak reverse blocking voltage of 1700 V, an average forward current of 350 A at 180° conduction, and a peak one-cycle surge current of 12,500 A. The device operates within a junction temperature range of -40 to +150 °C and provides 3000 Vrms isolation.

Feature Summary

• Electrically isolated heatsinking capability
• Aluminum nitride isolator construction
• Compression bonded elements
• Metal baseplate design

Applications

• Bridge circuits
• AC & DC motor drives
• Battery supplies
• Power supplies
• Large IGBT circuit front ends

Procurement Notes

Verify the complete eight-digit part number against official Powerex documentation before procurement. Confirm that the specific voltage rating suffix matches the required application voltage. Ensure mounting torque specifications are adhered to during installation to maintain thermal performance and mechanical integrity. Check for UL recognition status if required by system safety standards.

Selection Notes

Select this module for applications requiring high current rectification with integrated isolation. Consider the thermal impedance coefficients and maximum case temperatures when designing the cooling system. Evaluate the surge current ratings against potential fault conditions in the circuit. Ensure the operating temperature range aligns with the environmental requirements of the deployment site.

Part Context

This component belongs to the ND41__35 series of dual diode isolated modules from Powerex. The series offers various voltage ratings while maintaining a consistent 350 Ampere current capacity. These modules are designed for easy mounting on common heatsinks, reducing engineering time and eliminating the need for additional insulation components.

Replacement Considerations

Consult official Powerex documentation for confirmed substitute part numbers within the ND41 series or equivalent product lines. Verify dimensional compatibility and terminal configurations before substitution. Ensure electrical ratings meet or exceed the original design requirements.