1N4937GH

Overview

The 1N4937GH is a fast recovery rectifier manufactured by Taiwan Semiconductor Corporation. It features a glass-passivated silicon junction and is housed in a DO-41 axial leaded package. The device supports a maximum repetitive peak reverse voltage of 600 V and a continuous forward current of 1 A. Key electrical characteristics include a maximum forward voltage of 1.2 V, a reverse leakage current of 5 uA, and a peak non-repetitive surge current capability of 30 A. The component operates within a temperature range from -55 °C to +150 °C junction temperature.

Feature Summary

• Glass passivation provides long-term stability and protects against mechanical stress and chemical contamination.
• Fast switching characteristics enable high efficiency in high-frequency applications.
• High thermal performance allows for reliable operation at elevated junction temperatures.

Applications

• General-purpose rectification in power supplies
• Free-wheeling diodes in inductive load circuits
• Polarity protection in electronic systems

Procurement Notes

Verify the specific suffix 'GH' against the manufacturer's official datasheet to confirm exact specifications, as standard variants may differ. Ensure the ordering information matches the required RoHS compliance status and packaging type. Cross-reference with authorized distributors to validate authenticity and avoid counterfeit components.

Selection Notes

Select this component when a 600 V reverse voltage rating and 1 A continuous current are required. Consider the fast recovery time for applications demanding reduced switching losses. Verify that the DO-41 through-hole package fits the PCB layout constraints and that the operating temperature range meets the environmental requirements.

Part Context

This part belongs to the 1N493x series of fast recovery rectifiers. These devices are widely used in general-purpose electronics where moderate speed and robustness are needed. The series offers various voltage ratings while maintaining consistent current handling capabilities across different manufacturers.

Replacement Considerations

Compatible substitutes include Vishay 1N4937-E3/73 and onsemi 1N4937RLG. Verify pinout compatibility and ensure substitute parts meet or exceed the original voltage, current, and thermal specifications before implementation.