189NQ150-1

Overview

The SMC Diode Solutions 189NQ150-1 is a single Schottky rectifier diode housed in the PRM1-1 Half Pak module package. It features a maximum repetitive peak reverse voltage of 150 V and an average forward rectified current rating of 180 A per diode. The device exhibits a typical forward voltage drop of 1.07 V at 180 A. It supports junction temperatures up to 175°C and offers a high surge current capability of 1.86 kA.

Feature Summary

• Utilizes Schottky technology for low forward voltage drop and fast switching characteristics
• Designed as a unique high-power Half Pak module for efficient thermal management
• Supports operation at elevated junction temperatures up to 175°C

Applications

• High-current DC/DC converter modules
• Free-wheeling rectification in power supplies
• Low-voltage high-frequency inverters

Procurement Notes

Verify the exact part number suffix and manufacturer documentation when sourcing replacements, as availability varies. Confirm that the replacement component matches the original electrical ratings and physical footprint requirements for your specific chassis mount application.

Selection Notes

Select this component for applications requiring high current handling in a compact profile. The PRM1-1 package simplifies mounting compared to parallel discrete DO-5 packages while providing lower profile and easier thermal interface solutions for high-power density designs.

Part Context

This component belongs to the 189NQ series from SMC Diode Solutions, which are designed to replace multiple parallel-connected discrete diodes. The Half Pak module format integrates the semiconductor die with a baseplate for direct chassis cooling, streamlining assembly in industrial power systems.

Replacement Considerations

Direct equivalent replacements include the Sensitron Semiconductor variant of the 189NQ150-1. Ensure any substitute maintains the 150V rating, 180A current capacity, and PRM1-1 mechanical dimensions.