161CMQ045

Overview

The Vishay 161CMQ045 is a Schottky rectifier module featuring an isolated center tap configuration within a TO-249AA package. It provides a maximum average forward current of 160 A per leg and supports a maximum repetitive peak reverse voltage of 45 V. The device operates reliably up to a junction temperature of 175°C, with a typical thermal resistance from junction to case of 1.0°C/W per leg. Key electrical characteristics include a maximum forward voltage drop of 0.88 V at 160 A and a peak non-repetitive surge current capability of 11,500 A.

Feature Summary

• Isolated base design allows direct mounting to heatsinks without additional insulators
• Proprietary barrier technology ensures low reverse leakage current at elevated temperatures
• Multiple leads per terminal optimize high-frequency performance and reduce parasitic inductance
• Guard ring structure enhances ruggedness and long-term reliability under stress

Applications

• Switching power supplies
• DC-DC converters
• Free-wheeling diode circuits
• Reverse battery protection systems

Procurement Notes

Verify the specific suffix against official documentation to confirm exact ratings and packaging. Confirm that the TO-249AA footprint matches the target PCB layout. Ensure mounting torque specifications are strictly followed to maintain thermal interface integrity. Check for RoHS compliance status if required by the final assembly standards.

Selection Notes

Select this component when high current handling and low forward voltage drop are critical requirements. The isolated center tap architecture simplifies thermal management by eliminating the need for insulating washers. Consider the 175°C junction temperature rating for applications operating in high ambient heat environments where standard silicon devices may fail.

Part Context

This part belongs to the 161CMQ series of isolated center tap Schottky rectifiers. The series covers voltage ratings from 30 V to 50 V, sharing identical mechanical dimensions and thermal characteristics. The 161CMQ045 specifically targets the 45 V breakdown requirement within this standardized family of high-power modules.

Replacement Considerations

Direct replacements must match the TO-249AA outline and isolated cathode configuration. Verify that substitute parts support the same 160 A average current and 175°C junction temperature limits. Ensure equivalent or lower forward voltage drops to maintain system efficiency.