1N4937-T

Overview

The Diodes Incorporated 1N4937-T is a 1.0A fast recovery rectifier diode housed in a DO-41 package. It features a peak repetitive reverse voltage of 600V and an average rectified output current of 1.0A at +75°C ambient temperature. The device exhibits a forward voltage drop of 1.2V at 1.0A and a reverse recovery time of 200ns. It supports a non-repetitive peak forward surge current of 30A and operates within a junction temperature range of -65°C to +150°C.

Feature Summary

• Fast switching capability designed for high efficiency applications
• Diffused junction construction with low reverse leakage current
• Lead-free finish compliant with RoHS directives

Applications

• High frequency rectification circuits
• General purpose fast recovery applications
• Power supply input stages

Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration, as the datasheet indicates tape and reel options. Confirm that the component status aligns with project lifecycle requirements, noting the manufacturer's recommendation against new design inclusion. Ensure compliance with environmental directives such as RoHS 2 and RoHS 3 before finalizing procurement specifications.

Selection Notes

Select this component when a 600V reverse voltage rating is required alongside a 1.0A continuous current capacity. Consider the 200ns reverse recovery time for applications demanding faster switching than standard general-purpose diodes. Evaluate thermal management needs based on the specified thermal resistance and derating curves for ambient temperatures exceeding +25°C.

Part Context

This part belongs to the 1N4933 through 1N4937 series of 1.0A fast recovery rectifiers from Diodes Incorporated. The series shares identical electrical characteristics except for the peak repetitive reverse voltage rating, which varies from 50V to 600V across the lineup. The 1N4937 represents the highest voltage variant in this specific family grouping.

Replacement Considerations

The datasheet explicitly recommends using the RS1A through RS1J series instead of this component for new designs.