81CNQ035ASM

Overview

The Vishay VS-81CNQ035ASM is a center tap Schottky rectifier module in the D-61-8-SM package. It features two independent legs with a base common cathode configuration. The device supports a maximum DC reverse voltage of 35 V and provides a total average forward current rating of 80 A (40 A per leg). Key electrical characteristics include a maximum forward voltage drop of 0.60 V at 25 °C and a maximum reverse leakage current of 5 mA at rated voltage and 25 °C. The module operates within a junction temperature range of -55 °C to 175 °C.

Feature Summary

• Center tap module design optimized for low reverse leakage at high temperatures
• Proprietary barrier technology enabling reliable operation up to 175 °C junction temperature
• High purity, high temperature epoxy encapsulation providing enhanced mechanical strength and moisture resistance
• Guard ring structure designed to enhance ruggedness and long-term reliability

Applications

• Switching power supplies
• Converters
• Freewheeling diodes
• Reverse battery protection

Procurement Notes

Verify that the specific ordering suffix matches the required package style, as 'ASM' denotes the D-61-8-SM variant. Confirm lead-free compliance requirements against the PbF designation if applicable. Ensure thermal interface materials are compatible with the specified mounting torque and case flatness constraints to maintain the rated thermal resistance values during assembly.

Selection Notes

Select this component when a dual-leg Schottky rectifier with a common cathode is required for high-frequency applications. The D-61-8-SM package offers a small footprint suitable for space-constrained designs. Verify that the system's peak repetitive reverse voltage does not exceed the 35 V rating and that the average forward current per leg remains within the 40 A limit under the expected operating thermal conditions.

Part Context

This part belongs to the VS-81CNQ...A PbF Series, representing the New Generation 3 D-61 Package family from Vishay High Power Products. The series includes variants with different voltage ratings (35 V, 40 V, 45 V) and package styles (D-61, D-61-8-SM, D-61-8-SL). All members share the same 80 A total current rating and 175 °C operational capability.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.