123NQ100R

Overview

The Vishay General Semiconductor - Diodes Division 123NQ100R is a high-current Schottky rectifier module in the D-67 Half-Pak package. It features a maximum DC reverse voltage of 100 V and an average forward current rating of 120 A with a rectangular waveform. The device supports junction temperatures up to 175 °C, offering low forward voltage drop and high frequency operation. Key electrical parameters include a peak non-repetitive surge current of 16,000 A at 5 µs and a maximum thermal resistance from junction to case of 0.40 °C/W.

Feature Summary

• Optimized for low reverse leakage current at elevated temperatures using proprietary barrier technology
• Designed for reliable operation at junction temperatures up to 175 °C
• Features guard ring construction for enhanced ruggedness and long-term reliability
• Utilizes high purity, high temperature epoxy encapsulation for mechanical strength and moisture resistance

Applications

• Switching power supplies
• Converters
• Free-wheeling diodes
• Reverse battery protection

Procurement Notes

Verify the specific suffix 'R' during procurement, as it indicates reversed terminal polarity compared to the standard 123NQ100 variant. Confirm that the component is sourced from authorized distributors to ensure authenticity. Check for RoHS compliance status if required by assembly specifications. Ensure mounting hardware meets the specified torque requirements for secure installation.

Selection Notes

Select this component when high current handling and low forward voltage drop are critical for efficiency. The 175 °C junction temperature capability allows for robust performance in thermally constrained environments. Consider the D-67 Half-Pak form factor for applications requiring easier mounting and lower profile than parallel DO-5 configurations. Evaluate thermal management needs based on the specified thermal resistance values.

Part Context

This part belongs to the 123NQ... (R) series of high current Schottky rectifiers. The series is designed to replace two parallel DO-5 diodes, offering a more compact solution with improved mounting ease. The R suffix specifically denotes the orientation of the lug and base terminals relative to the anode and cathode connections.

Replacement Considerations

The datasheet does not list specific public substitute part numbers. When replacing, verify that any alternative matches the 123A current rating, 100V reverse voltage, and D-67 package dimensions. Ensure the replacement also supports 175 °C operation if thermal constraints are critical.