1N4942-1/TR

Overview

The Microchip Technology 1N4942-1/TR is a single fast recovery rectifier diode designed for through-hole mounting in the A-Package-2 (DO-204AP) axial leaded configuration. It features a maximum repetitive reverse voltage of 200 V and an average forward current rating of 1 A. The device exhibits a typical forward voltage drop of 1.3 V at rated current and a low reverse leakage current of 1 uA. Key performance metrics include a maximum non-repetitive peak surge current of 15 A and a fast recovery time of 150 ns. It operates reliably within a junction temperature range of -65 °C to +175 °C.

Feature Summary

• Fast recovery characteristics suitable for high-speed switching applications
• High thermal stability with extended operating temperature range up to 175 °C
• Low leakage current ensuring efficient blocking performance
• Robust surge current handling capability for transient protection

Applications

• General purpose fast recovery rectification circuits
• Free-wheeling diodes in inductive load switching
• High-frequency power supply output rectification
• Clamping and flyback diode applications

Procurement Notes

Verify the specific suffix '-1' against official Microchip documentation to confirm exact electrical tolerances and testing criteria, as suffixes often denote specific quality or screening levels. Confirm package dimensions match the A-Package-2 specification before PCB layout finalization. Ensure procurement channels provide valid manufacturer traceability for this component.

Selection Notes

Select this component when a standard 1A rectifier requires faster recovery than general-purpose types but does not need ultra-fast speeds. Compare the 150 ns recovery time against circuit switching frequencies to ensure minimal reverse recovery charge losses. Verify that the 200 V reverse voltage rating provides adequate margin for the peak inverse voltage in the target application environment.

Part Context

This part belongs to the 1N494x series of silicon planar fast recovery rectifiers manufactured by Microchip Technology. The series utilizes axial leaded DO-204AP packages for reliable through-hole integration. The product line is engineered for robust performance in demanding electronic environments, offering consistent electrical characteristics across the manufacturing batch.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with other manufacturers' 1N4942 equivalents only after verifying pinout compatibility and electrical parameter equivalence against the official datasheet.