1N1204R

Single Diodes Overview

The 1N1204R is a silicon rectifier diode manufactured by Microchip Technology. It features a maximum average forward current of 12 A and a peak repetitive reverse voltage of 400 V. The device utilizes a DO-203AA (DO-4) package with stud mount installation. Key electrical parameters include a maximum non-repetitive peak forward surge current of 250 A, a maximum DC reverse leakage current of 10 µA at 400 V, and a maximum forward voltage of 1.2 V at 30 A. The junction temperature range spans from -65°C to +200°C.

Single Diodes Feature Summary

• Standard recovery rectifier construction for general-purpose power applications
• Stud mount configuration in a DO-203AA metal case for robust thermal management
• High surge current capability suitable for demanding power circuits

Single Diodes Applications

• General purpose rectification in industrial power supplies
• Battery charging systems requiring high reliability
• DC power distribution units

Single Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N1204R designation has been produced by multiple vendors including Microsemi and Vishay. Confirm that the delivered component matches the required Microchip Technology specifications and package details. Ensure compliance with any applicable military or aerospace standards if the design requires them, as this part number often appears in such contexts.

Single Diodes Selection Notes

Select this component when a standard recovery silicon rectifier with a 12 A continuous current rating and 400 V blocking voltage is required. The DO-203AA stud mount package necessitates appropriate heatsinking and mounting hardware. Consider the 1.2 V forward voltage drop for efficiency calculations and ensure the operating environment stays within the specified -65°C to +200°C junction temperature limits.

Single Diodes Part Context

The 1N1204R belongs to the broader family of MIL-spec style silicon power rectifiers. It shares characteristics with other 12 A, 400 V devices in the DO-4 package form factor. This series is commonly used in legacy and ruggedized electronic designs where proven silicon technology and mechanical durability are prioritized over modern switching speeds.

Single Diodes Replacement Considerations

Direct substitutes include the 1N1204 and 1N1204A from various manufacturers. Verify pinout compatibility and thermal resistance values when replacing with equivalents from different suppliers.