1N4937GP

Overview

The onsemi 1N4937GP is a glass-passivated fast recovery rectifier diode designed for high-efficiency switching applications. It features a maximum repetitive reverse voltage of 600 V and an average rectified forward current of 1.0 A at 75°C ambient temperature with .375-inch lead lengths. The device exhibits a low forward voltage drop of 1.2 V at rated current and a reverse recovery time of 150 ns under specified test conditions. It supports non-repetitive peak forward surge currents up to 30 A and operates within a junction temperature range of -65°C to +175°C.

Feature Summary

• Glass passivation provides high reliability and protection against mechanical stress.
• Fast switching characteristics enable high efficiency in power conversion circuits.
• Low forward voltage drop reduces conduction losses during operation.
• High surge current capability ensures robustness against transient load conditions.

Applications

• High-frequency power supply rectification
• Free-wheeling diodes in inductive load circuits
• DC-DC converter output stages

Procurement Notes

Verify the specific manufacturer origin, as the 1N4937GP designation originates from Fairchild Semiconductor specifications now managed by onsemi. Confirm RoHS compliance status and package variant (DO-41) against current production data sheets. Ensure ordering suffixes match required packaging formats such as bulk or tape-and-reel. Cross-reference electrical parameters with the latest datasheet revision to account for potential manufacturing updates.

Selection Notes

Select this component when a 600 V blocking voltage and 1 A continuous current rating are required in a through-hole DO-41 package. The 150 ns reverse recovery time makes it suitable for general-purpose fast recovery applications where ultra-fast switching is not critical. Consider thermal derating curves for ambient temperatures exceeding 75°C to maintain the 1.0 A rating. Compare leakage current specifications at elevated temperatures if operating in high-heat environments.

Part Context

This part belongs to the 1N493x series of glass-passivated fast rectifiers, differentiated primarily by their reverse voltage ratings. The 1N4937GP represents the highest voltage variant in this specific lineup, offering 600 V capability. The 'GP' suffix typically denotes glass passivation and specific packaging or compliance attributes defined by the original Fairchild Semiconductor product line standards.

Replacement Considerations

Direct substitutes include other 1N4937 variants from manufacturers like Vishay or STMicroelectronics, provided they meet the 600 V, 1 A, and DO-41 package requirements. Verify that replacement parts offer comparable reverse recovery times and forward voltage drops to ensure circuit performance parity.