75HQ045

Overview

The Microchip Technology 75HQ045 is a Schottky barrier rectifier designed for high-efficiency power conversion. It features a maximum repetitive peak reverse voltage of 45 V and an average forward rectified current rating of 80 A. The device utilizes a DO-203AB (DO-5) axial leaded package with stud mounting capabilities, suitable for robust industrial applications. Key electrical characteristics include a typical forward voltage drop of 740 mV at the rated current and a maximum reverse leakage current of 5 mA at full reverse voltage. The component operates within a junction temperature range of -65°C to 175°C.

Feature Summary

• Schottky barrier technology ensures low forward voltage drop and minimal switching losses.
• High thermal stability supports operation across a wide junction temperature range up to 175°C.
• Stud mounting configuration in a DO-203AB package facilitates efficient heat dissipation.

Applications

• DC-to-DC converter circuits
• Free-wheeling diodes in inductive load protection
• Power supply rectification

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to ensure correct packaging and variant selection. Confirm RoHS compliance status as indicated in the datasheet, noting that this specific part may not meet standard environmental directives. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring high surge current handling and fast recovery characteristics. Ensure the circuit design accommodates the 45 V reverse voltage limit and provides adequate thermal management for the 80 A continuous current rating. Verify that the mechanical mounting holes align with the DO-203AB stud dimensions for proper installation.

Part Context

This device belongs to the SBR series of Schottky Barrier Rectifiers manufactured by Microchip Technology. These components are engineered to replace traditional fast recovery diodes, offering superior efficiency in high-frequency switching applications. The series is characterized by its ability to handle significant forward currents while maintaining low thermal resistance through specialized package designs.

Replacement Considerations

Consult the official Microchip SBR datasheet for direct pin-compatible alternatives within the same voltage and current ratings. Verify that any substitute maintains the DO-203AB package style and stud mounting requirements to ensure mechanical compatibility.