1N1204

Single Diodes Overview

The Microchip Technology 1N1204 is a silicon rectifier diode designed for general-purpose applications. It features a maximum average forward rectified current of 12 A and a peak repetitive reverse voltage rating of 400 V. The device utilizes a DO-4 (DO-203AA) axial leaded package with stud mounting capabilities. Electrical characteristics include a maximum non-repetitive peak forward surge current of 240 A, a maximum DC reverse leakage current of 10 µA at 400 V, and a maximum forward voltage drop of 1.2 V at 30 A. The junction temperature range extends from -65°C to 200°C.

Single Diodes Feature Summary

• High thermal stability with an extended junction temperature range up to 200°C
• Robust surge handling capability with a 240 A non-repetitive peak forward current rating
• Standard recovery speed suitable for general-purpose rectification tasks

Single Diodes Applications

• General-purpose power supply rectification
• Industrial equipment power stages
• Automotive electronics requiring high reliability

Single Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N1204 designation is utilized by multiple vendors including Microchip, Microsemi, and others. Confirm RoHS compliance status, as standard versions may not meet current environmental directives. Ensure the package type matches the required DO-4 or DO-203AA form factor for your PCB or chassis design. Check datasheet revisions for any manufacturing changes that might affect electrical parameters or pin configurations.

Single Diodes Selection Notes

Select this component when a standard silicon rectifier with 12 A continuous current capacity is required. The 400 V reverse voltage rating makes it suitable for low-to-medium voltage AC-DC conversion. Consider the DO-4 package size for mechanical fitment in through-hole or stud-mounted designs. Evaluate the 1.2 V forward voltage drop for thermal management in high-current applications compared to Schottky alternatives.

Single Diodes Part Context

The 1N1204 belongs to the legacy 1N series of silicon rectifier diodes, widely used in industrial and automotive sectors. Microchip Technology offers this component as part of its discrete semiconductor portfolio, maintaining compatibility with historical designs. The device serves as a reliable solution for power conversion where standard recovery characteristics are sufficient.

Single Diodes Replacement Considerations

Equivalent parts include the 1N1204R from Microsemi/Vishay and Digitron variants. Verify electrical parameters such as forward voltage and leakage current match before substitution. Package dimensions must be compatible with existing mounting hardware.