1N4937GPEHE3/91

Overview

The Vishay 1N4937GPEHE3/91 is a glass-passivated junction fast-switching plastic rectifier in the DO-41 package. It features a Superectifier structure with a cavity-free design for high reliability. Key electrical parameters include a maximum repetitive peak reverse voltage of 600 V, a maximum average forward rectified current of 1.0 A, and a peak forward surge current of 30 A. The device exhibits a maximum instantaneous forward voltage of 1.2 V at 1.0 A, a maximum DC reverse current of 5.0 μA at rated voltage, and a typical reverse recovery time of 200 ns. Operating junction temperature ranges from -65 to +175 °C.

Feature Summary

• Glass passivated junction with cavity-free construction for enhanced reliability
• Fast switching capability designed for high efficiency applications
• Low leakage current characteristics under rated blocking voltage conditions
• High forward surge current capability supporting transient load demands

Applications

• Fast switching rectification in power supply circuits
• Inverter and converter topologies
• Freewheeling diode implementation in consumer electronics
• Telecommunication equipment power stages

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging configuration and compliance status. The datasheet indicates this series is not recommended for new designs; ensure existing inventory requirements align with current production availability. Confirm RoHS compliance and material categorization details via the referenced Vishay compliance documents before finalizing procurement specifications.

Selection Notes

Select this component when a 600 V reverse voltage rating is required alongside a 1.0 A continuous forward current capacity. The 200 ns reverse recovery time makes it suitable for general-purpose fast switching rather than high-frequency RF applications. Ensure thermal management accounts for the specified junction temperature limits and derating curves provided in the datasheet for ambient temperatures exceeding 75 °C.

Part Context

This part belongs to the 1N493xGP series of fast switching plastic rectifiers manufactured by Vishay General Semiconductor. The series shares identical mechanical dimensions and thermal characteristics, differing primarily in their maximum repetitive peak reverse voltage ratings which range from 50 V to 600 V across the family members.

Replacement Considerations

Direct substitutes within the same Vishay series include parts with lower voltage ratings such as 1N4936GP (400 V), though these do not match the 600 V requirement. Cross-manufacturer replacements must be verified for matching DO-41 package dimensions, 1.0 A current rating, and 600 V reverse voltage capability.

FAQ

What is the maximum operating junction temperature for this rectifier?

The maximum operating junction temperature is +175 °C.

Does the device feature a leaded or surface-mount package?

The device utilizes a through-hole DO-41 (DO-204AL) molded epoxy package with matte tin plated leads.