HER155GH

Single Diodes Overview

The HER155GH is a high-efficiency fast recovery rectifier manufactured by Taiwan Semiconductor Corporation. It features a silicon P-N junction with glass passivation, housed in a DO-204AC (DO-15) through-hole package. The device supports a maximum repetitive peak reverse voltage of 400V and an average forward rectified current of 1.5A. Key electrical parameters include a maximum non-repetitive peak forward surge current of 50A, a typical reverse leakage current of 5uA at rated voltage, and a maximum reverse recovery time of 75ns. It operates within a temperature range of -55°C to +150°C junction temperature.

Single Diodes Feature Summary

• Fast recovery characteristics suitable for high-frequency switching applications
• Glass passivated junction for enhanced reliability and stability
• High surge current capability to withstand transient loads

Single Diodes Applications

• General purpose high efficiency rectification
• DC-DC converter output rectification
• Inverter circuits
• Free-wheeling diodes in inductive load circuits

Single Diodes Procurement Notes

Verify the specific suffix 'GH' against the manufacturer's official datasheet to confirm exact binning or packaging specifications. Ensure the component meets AEC-Q101 automotive qualification requirements if intended for automotive use. Cross-reference the DO-204AC package dimensions with your PCB footprint design. Confirm RoHS compliance status directly with the supplier documentation prior to procurement.

Single Diodes Selection Notes

Select this component when a 400V blocking voltage and 1.5A continuous current rating are required in a standard axial leaded package. Consider the 75ns reverse recovery time for switching frequencies where standard rectifiers may exhibit excessive losses. Evaluate thermal management needs based on the 1.5A forward current and expected ambient temperatures within the -55°C to +150°C operating range.

Single Diodes Part Context

This part belongs to the HER15x series of high-efficiency rectifiers from Taiwan Semiconductor. The series typically spans reverse voltages from 50V to 1000V with consistent 1.5A current ratings. The HER155 variant specifically targets 400V applications, offering a balance between blocking capability and switching speed compared to slower general-purpose diodes in the same form factor.

Single Diodes Replacement Considerations

Direct substitutes with identical 400V/1.5A/DO-15 specifications include HER155G from other manufacturers such as Diodes Inc. or MCC. Verify that replacement parts maintain the same 75ns max reverse recovery time and 50A surge current rating to ensure circuit performance parity.