80CPQ020

Overview

The Vishay 80CPQ020 is a Schottky rectifier featuring a dual anode common cathode configuration in a TO-247AC package. It provides a maximum average forward current of 80 A and a repetitive peak reverse voltage of 20 V. The device supports junction temperatures up to 150 °C, with a typical forward voltage drop of 0.32 V at 40 A and 150 °C. Key electrical parameters include a non-repetitive surge current capability of 2200 A and a maximum reverse leakage current of 1100 mA at 125 °C.

Feature Summary

• Optimized for ultra-low forward voltage drop specifically for 3.3 V output power supplies
• Guard ring structure designed for enhanced ruggedness and long-term reliability
• High purity, high temperature epoxy encapsulation providing mechanical strength and moisture resistance

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm lead-free status and packaging quantity. Standard production units typically come in tubes of 25 pieces. Confirm that the TO-247AC mounting torque requirements are met during installation to ensure proper thermal contact and mechanical stability.

Selection Notes

Select this component when low forward voltage drop is critical for efficiency in 3.3 V applications. Ensure the operating junction temperature does not exceed 150 °C. Verify that the 20 V reverse voltage rating accommodates system transients and that the 80 A current capacity meets load requirements under specified duty cycles.

Part Context

This part belongs to the Vishay High Power Products Schottky Rectifier series. It utilizes proprietary barrier technology to achieve reliable operation at elevated temperatures. The device is designed and qualified for industrial level applications, distinguishing it from general-purpose diodes through its specialized thermal and electrical characteristics.

Replacement Considerations

Check datasheets for alternative Schottky rectifiers with matching 2 x 40 A current ratings and 20 V reverse voltage. Ensure replacement parts support the same TO-247AC package and center tap configuration. Verify that thermal resistance and forward voltage characteristics are compatible with existing heat sink designs.

FAQ

What is the maximum thermal resistance from junction to case?

The maximum thermal resistance from junction to case per leg is 0.6 °C/W for DC operation.

Does the device support avalanche energy?

Yes, the device has a rated non-repetitive avalanche energy of 27 mJ per leg at TJ = 25 °C with IAS = 6 A and L = 1.5 mH.

What is the typical series inductance per leg?

The typical series inductance per leg is 7.5 nH, measured lead to lead 5 mm from the package body.