1N4947GPHM3/73

Overview

The 1N4947GPHM3/73 is a silicon rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It features a single element configuration with a maximum average forward rectified current of 1 A and a maximum repetitive peak reverse voltage of 800 V. The device utilizes a glass passivated junction for high reliability and is housed in the DO-204AL (DO-41) axial leaded plastic package. It is designed for high-frequency rectification applications, offering fast switching capabilities and low leakage current characteristics suitable for general-purpose use.

Feature Summary

• Glass passivated junction construction provides cavity-free protection and enhanced environmental stability.
• High temperature metallurgically bonded internal construction ensures robust mechanical integrity.
• Plastic encapsulation meets Underwriters Laboratory Flammability Classification 94V-0 standards.
• Capable of meeting environmental standards defined in MIL-S-19500/228.

Applications

• High frequency rectifier circuits
• General purpose rectification in power supplies
• Free wheeling diode applications

Procurement Notes

Verify the specific suffix HM3/73 against official Vishay documentation to confirm RoHS compliance status and tape-and-reel packaging specifications. Ensure the ordering part number matches the exact electrical ratings required for the target circuit design. Cross-reference datasheet revisions to confirm terminal solderability and thermal resistance parameters remain consistent with system requirements.

Selection Notes

Select this component when an 800 V reverse voltage rating and 1 A continuous forward current are required within a standard DO-41 footprint. The glass passivation makes it suitable for environments requiring stable leakage performance. Consider the operating temperature range and thermal management needs for high-frequency switching applications where fast recovery characteristics are beneficial.

Part Context

This component belongs to the 1N494x series of fast recovery plastic rectifiers produced by Vishay. The series covers reverse voltage ratings from 200 V to 1000 V, sharing common physical dimensions and mounting styles. The 1N4947 variant specifically targets the 800 V segment, providing a standardized solution for medium-voltage rectification tasks across industrial and consumer electronics sectors.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4947 equivalents or Vishay's 1N4947GP variants. Verify that replacement parts maintain identical DO-41 package dimensions, pinout polarity, and electrical limits such as peak inverse voltage and forward current capacity to ensure direct interchangeability without circuit modification.