161CNQ045

Overview

The Vishay 161CNQ045 is a non-isolated, center-tap Schottky rectifier module in a TO-249AA package. It features a maximum repetitive peak reverse voltage of 45 V and an average forward current rating of 80 A per leg (160 A total). The device operates with a junction temperature range from -55 °C to 175 °C. Key electrical characteristics include a maximum forward voltage drop of 0.71 V at 80 A and 25 °C, or 0.63 V at 80 A and 125 °C. Maximum reverse leakage current is specified as 5 mA at 25 °C and 45 mA at 125 °C.

Feature Summary

• Proprietary barrier technology enables reliable operation up to 175 °C junction temperature.
• Optimized for very low forward voltage drop with moderate leakage current.
• High purity, high temperature epoxy encapsulation provides enhanced mechanical strength and moisture resistance.
• Guard ring design ensures enhanced ruggedness and long-term reliability.

Applications

• Switching power supplies
• Converters
• Free-wheeling diodes
• Reverse battery protection

Procurement Notes

Verify the specific part number suffix against official Vishay documentation to confirm exact ratings and packaging. Confirm thermal interface requirements and mounting torque specifications before integration. Check for any recent product change notifications or end-of-life status updates directly from the manufacturer.

Selection Notes

Select this component for applications requiring high-frequency operation and low forward voltage drop. Ensure the cooling solution maintains the case temperature within limits defined by the duty cycle and ambient conditions. Verify that the peak surge current capabilities align with the circuit's transient requirements.

Part Context

This component belongs to the 161CNQ series of non-isolated, center-tap Schottky rectifier modules. The series is designed for high-current applications, offering various voltage ratings including 35 V, 40 V, and 45 V options within the same physical footprint and thermal profile.

Replacement Considerations

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

FAQ

What is the maximum non-repetitive surge current rating?

The maximum peak one-cycle non-repetitive surge current is 11,500 A for a 5 µs sine wave pulse per leg.

How does the forward voltage drop vary with temperature?

The maximum forward voltage drop decreases as temperature increases, specified as 0.71 V at 25 °C and 0.63 V at 125 °C when tested at 80 A.

What is the typical series inductance per leg?

The typical series inductance is 8.0 nH, measured from terminal hole to terminal hole.