125NQ015

Overview

The Vishay 125NQ015 is a high-current Schottky rectifier module in the D-67 Half-Pak package. It features a maximum average forward current of 120 A and a maximum repetitive peak reverse voltage of 15 V. The device supports a junction temperature range from -55 °C to 125 °C. Key electrical parameters include a maximum forward voltage drop of 0.39 V at 120 A, a maximum reverse leakage current of 40 mA at 25 °C, and a typical series inductance of 7.0 nH.

Feature Summary

• Optimized for ultra-low forward voltage drop specifically for OR-ing parallel power supplies
• Proprietary barrier technology allows reliable operation up to 125 °C junction temperature
• Guard ring design provides enhanced ruggedness and long-term reliability
• High purity, high temperature epoxy encapsulation ensures mechanical strength and moisture resistance

Applications

• Parallel switching power supplies
• Converters
• Reverse battery protection
• Redundant power subsystems

Procurement Notes

Verify the specific terminal configuration required for the application before ordering. The 125NQ015 variant has the lug as the anode and the base as the cathode. Conversely, the 125NQ015R variant reverses this polarity, with the lug serving as the cathode and the base as the anode. Confirming the correct suffix is essential to ensure proper circuit integration and prevent installation errors.

Selection Notes

Select this component when designing systems requiring high surge capability and low conduction losses. The device is rated for a peak one-cycle non-repetitive surge current of 10,800 A. Its low thermal resistance facilitates efficient heat dissipation. Ensure the mounting surface is smooth and greased to achieve the specified case-to-heatsink thermal resistance value.

Part Context

This component belongs to the VSX series of high-power Schottky rectifiers manufactured by Vishay General Semiconductor. It utilizes a proprietary barrier technology designed for high-frequency operation. The module is housed in a robust D-67 Half-Pak case style, which is engineered to withstand harsh environmental conditions while maintaining stable electrical performance under heavy load currents.

Replacement Considerations

The datasheet lists the 125NQ015R as a related part number within the same family. This variant shares identical electrical ratings but features reversed terminal polarity compared to the standard 125NQ015.