80CNQ035A

Overview

The Vishay VS-80CNQ035APbF is a center tap Schottky rectifier module featuring two independent legs with a common cathode configuration. It utilizes proprietary barrier technology to achieve very low forward voltage drop and supports junction temperatures up to 150 °C. The device provides a maximum average forward current of 40 A per leg (80 A total) and a maximum DC reverse voltage of 35 V. Packaged in the D-61-8 through-hole format, it is designed for high frequency operation and reverse battery protection applications.

Feature Summary

• Center tap module design with common cathode configuration
• Proprietary barrier technology enabling reliable operation at elevated temperatures
• High purity epoxy encapsulation providing enhanced mechanical strength and moisture resistance
• Guard ring structure integrated for improved ruggedness and long-term reliability

Applications

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

Procurement Notes

Verify that the specific part number includes the PbF suffix to ensure compliance with lead-free manufacturing requirements and RoHS directives. Confirm the package style matches the required footprint, as variations such as D-61-8-SM or D-61-8-SL exist within the series. Ensure thermal management solutions are compatible with the specified thermal resistance values for the chosen mounting surface.

Selection Notes

Select this component when a dual anode common cathode topology is required for high current applications. The 35 V rating suits systems operating below this threshold. Consider the thermal resistance characteristics and the need for heatsinking based on the expected duty cycle and ambient temperature conditions. Verify that the package dimensions fit the available board space.

Part Context

This device belongs to the VS-80CNQ...A PbF Series from Vishay High Power Products. It represents a new generation 3 D-61 package offering a small footprint with high current capabilities. The series is designed and qualified for industrial level applications, ensuring robust performance in demanding environments compared to standard commercial grade components.

Replacement Considerations

Direct substitutes include other models within the same series, specifically VS-80CNQ040APbF and VS-80CNQ045APbF, which share identical electrical ratings except for the higher reverse voltage capabilities. Ensure any replacement maintains the same D-61-8 package style and pinout configuration.

FAQ

What is the maximum non-repetitive surge current capability?

The maximum peak one-cycle non-repetitive surge current is 5800 A for a 5 μs sine pulse or 750 A for a 10 ms sine pulse.

How does the forward voltage drop vary with temperature?

The forward voltage drop decreases as the junction temperature increases; for example, at 40 A, it drops from 0.52 V at 25 °C to 0.47 V at 125 °C.

Is the device suitable for lead-free soldering processes?

Yes, versions with the PbF suffix are compliant with RoHS directives and designed for use in lead-free applications.