1N4948GPHM3/54

Overview

The 1N4948GPHM3/54 is a silicon rectifier diode from Vishay General Semiconductor, belonging to the SuperEctifier series. It features a maximum average forward rectified current of 1 A and a repetitive peak reverse voltage of 1000 V. The device utilizes a DO-204AL (DO-41) axial leaded package with plastic encapsulation. Key electrical characteristics include a maximum non-repetitive peak surge current of 30 A at 8.3 ms single half-sine-wave, a maximum DC blocking leakage current of 5 µA at rated voltage, and a typical reverse recovery time of 500 ns. It operates within a junction temperature range of -65 °C to +175 °C.

Feature Summary

• High thermal stability with a maximum operating junction temperature of 175 °C
• Low leakage current for efficient power handling
• Robust surge current capability for transient protection
• Standard axial through-hole mounting configuration

Applications

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

Procurement Notes

Verify the specific suffix 'HM3' against official Vishay documentation to confirm compliance status and material composition details. Ensure the ordering part number matches the required package style and termination finish. Cross-reference the manufacturer's latest datasheet for any updates on environmental regulations or manufacturing changes before finalizing procurement specifications.

Selection Notes

Select this component when a high-voltage standard rectifier with low leakage is required. The 1000 V rating suits mains-connected applications. The 1 A current capacity defines its load limits. Verify that the DO-41 package fits the PCB layout constraints. Consider the 175 °C junction temperature for high-temperature environments compared to standard 150 °C alternatives.

Part Context

This part belongs to Vishay's SuperEctifier line, designed for general-purpose rectification. It is functionally equivalent to the JEDEC 1N4948 specification. The 'HM3' suffix typically indicates halogen-free and RoHS-compliant materials. The '/54' suffix denotes tape and reel packaging. This series provides a balance of performance and reliability for industrial and consumer electronics.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4948 variants such as those from ON Semiconductor or Diodes Inc., provided they meet the 1 A / 1000 V / DO-41 specifications. Verify pinout compatibility and thermal resistance values. Ensure replacement parts maintain the same reverse recovery time and leakage current characteristics for circuit integrity.