HER157GH

Single Diodes Overview

The HER157GH is a glass passivated high-efficiency rectifier manufactured by Taiwan Semiconductor Corporation. It features a single diode configuration housed in a DO-204AC (DO-15) through-hole package with two pins. Key electrical specifications include a maximum continuous forward current of 1.5A and a peak repetitive reverse voltage of 800V. The device exhibits a peak reverse recovery time of 75ns, a maximum forward voltage drop of 1.7V, and a peak non-repetitive forward surge current capability of 50A. It operates within a temperature range of -65°C to +150°C.

Single Diodes Feature Summary

• Glass passivation provides mechanical strength and protects against external physical stress.
• High efficiency design ensures low power loss during operation.
• Fast recovery characteristics support high-frequency switching applications.

Single Diodes Applications

• General purpose rectification in power supplies
• Freewheeling diodes in inductive load circuits
• Reverse polarity protection in electronic systems

Single Diodes Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance and halogen-free status according to IEC 61249-2-21 standards. Confirm the package type matches DO-204AC dimensions for PCB footprint compatibility. Ensure the 800V rating aligns with circuit voltage requirements. Check for AEC-Q101 qualification if automotive application is intended, though this specific part number's automotive status requires datasheet confirmation.

Single Diodes Selection Notes

Select this component when an 800V blocking voltage is required for single-phase rectification. The 1.5A current rating suits moderate power applications. The 75ns recovery time makes it suitable for general-purpose switching rather than ultra-high-frequency converters. Consider the DO-15 package size for available board space and thermal dissipation needs relative to the 1.5A load.

Single Diodes Part Context

This part belongs to the HER15 series of high-efficiency rectifiers from Taiwan Semiconductor. The series offers various voltage ratings from 50V to 1000V while maintaining consistent 1.5A current handling. The HER157GH specifically targets higher voltage isolation needs compared to lower-rated siblings like the HER153G or HER156.

Single Diodes Replacement Considerations

Direct substitutes must match the 800V Vrrm, 1.5A If, and DO-15 package. Generic fast recovery diodes with identical electrical parameters may serve as alternatives if pinout and thermal characteristics are verified.