80CNQ040ASM

Overview

The Vishay VS-80CNQ040ASM is a center tap Schottky rectifier module featuring two independent legs within a single D-61-8-SM package. It provides a maximum average forward current of 40 A per leg (80 A total) and a repetitive peak reverse voltage of 40 V. The device utilizes proprietary barrier technology to achieve a low forward voltage drop of 0.47 V at 40 Apk and 125 °C junction temperature. It supports operation up to a maximum junction temperature of 150 °C and offers high frequency performance with minimal leakage current.

Feature Summary

• Center tap configuration with dual anodes and a common cathode for efficient power conversion
• Proprietary barrier technology enabling reliable operation at elevated junction temperatures up to 150 °C
• Very low forward voltage drop optimized for high efficiency in switching applications
• High purity epoxy encapsulation providing enhanced mechanical strength and moisture resistance

Applications

• Switching power supplies
• DC-DC converters
• Freewheeling diodes
• Reverse battery protection circuits

Procurement Notes

Verify the specific ordering suffix 'ASM' corresponds to the D-61-8-SM surface mount package style as defined in the official datasheet. Confirm that the component meets RoHS compliance requirements if lead-free terminations are mandatory for the assembly process. Ensure thermal management designs account for the specified thermal resistance values to maintain safe operating temperatures.

Selection Notes

Select this component when a dual Schottky rectifier with a common cathode topology is required for high-current applications. The 40 V rating suits low-voltage output stages where minimizing conduction losses is critical. Consider the D-61-8-SM footprint for surface mount layouts requiring robust current handling capabilities exceeding standard discrete diode limits.

Part Context

This part belongs to the VS-80CNQ...A PbF series, representing a new generation of Schottky rectifiers utilizing the D-61 package family. The series includes variants with different voltage ratings such as 35 V and 45 V, all sharing the same 80 A total current capacity and physical dimensions. The 'A' designation indicates industrial level qualification and reliability standards.

Replacement Considerations

Direct substitutes include other parts from the VS-80CNQ...A series with matching voltage ratings, such as the VS-80CNQ035ASM or VS-80CNQ045ASM. Verify pinout compatibility and thermal characteristics before substituting with components from different manufacturers offering similar D-61 form factors.