181NQ040-1

Overview

The 181NQ040-1 is a Schottky rectifier from SMC Diode Solutions, rated for 40 V DC reverse voltage and 180 A average rectified current. It features a maximum forward voltage of 660 mV at full load and supports junction temperatures up to 175°C. Housed in the PRM1-1 Half Pak module package, this chassis-mount component offers high power density and lower profile compared to traditional DO-5 configurations.

Feature Summary

• Utilizes Schottky technology for efficient rectification
• Designed as a unique high-power Half Pak module
• Supports operation at elevated junction temperatures up to 175°C

Applications

• Heavy-duty industrial power conversion systems
• Chassis-mounted rectification applications
• Replacement for parallel DO-5 diode configurations

Procurement Notes

Verify the specific suffix (e.g., -R) if tape-and-reel packaging is required, as standard versions may differ. Confirm chassis mounting requirements align with thermal management plans. Ensure the 40 V rating meets circuit reverse voltage needs. Check active status with authorized distributors before ordering.

Selection Notes

Select this component when high current handling near 180 A is necessary alongside low forward voltage drop characteristics. The Half Pak module form factor simplifies assembly compared to discrete parallel setups. Ensure adequate heatsinking capability for the specified thermal performance.

Part Context

This part belongs to the 181NQ/R-1 series of Schottky rectifiers by SMC Diode Solutions. The series includes variants with different reverse voltage ratings such as 35 V and 45 V, all sharing the same 180 A current capacity and PRM1-1 package structure for consistent mechanical integration.

Replacement Considerations

Officially documented to replace three parallel DO-5 diodes. Verify pinout compatibility and thermal interface requirements when substituting legacy discrete solutions.