ND431225

SCRs - Modules Overview

The ND431225 is a dual silicon-controlled rectifier (SCR) isolated module from the POW-R-BLOK series, manufactured by Powerex. Designed for phase control applications, this component integrates two SCRs within a single electrically isolated package. It supports currents up to 250 Amperes and blocking voltages of up to 1600 Volts. The module utilizes an aluminum nitride insulator and compression bonded elements to ensure low thermal impedance and reliable operation in high-power environments.

SCRs - Modules Feature Summary

• Electrically isolated heatsinking capability allows direct mounting on common heatsinks without additional insulation components.
• Constructs with aluminum nitride insulators and metal baseplates to provide low thermal impedance for improved current handling.
• Features quick connect gate terminals designed for keyed mating plugs to facilitate installation.
• UL recognized certification ensures compliance with safety standards for industrial power electronics.

SCRs - Modules Applications

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

SCRs - Modules Procurement Notes

Verify the specific voltage and current ratings required for your application against the datasheet specifications before ordering. Confirm that the mounting interface matches your existing heatsink design due to the module's isolation features. Ensure gate drive compatibility with the quick connect terminal type specified in the official documentation to avoid integration issues.

SCRs - Modules Selection Notes

Select this component when phase control and electrical isolation are required in a compact form factor. The dual SCR configuration simplifies bridge circuit designs by reducing component count. Consider the thermal management requirements associated with the 250 Ampere rating and the benefits of the aluminum nitride insulation for high-temperature stability.

SCRs - Modules Part Context

This part belongs to the POW-R-BLOK family of dual SCR isolated modules. Similar parts in the series include the CD4340 and CD4360, which offer lower current ratings but share the same isolation and packaging technology. These modules are engineered for robust performance in industrial power conversion systems where reliability and ease of installation are critical.

SCRs - Modules Replacement Considerations

Direct replacements must match the dual SCR topology and isolation requirements. Verify that substitute modules support similar voltage and current levels. Check for compatible gate terminal interfaces to ensure seamless integration into existing PCB or busbar layouts without redesigning the mechanical assembly.