1N1204B

Single Diodes Overview

The Microchip Technology 1N1204B is a standard recovery rectifier diode designed for high-power applications. It features a maximum repetitive peak reverse voltage (Vrrm) of 400 V and an average forward rectified current (Io) of 12 A. The device exhibits a low forward voltage drop of 1.2 V at 30 A and maintains a reverse leakage current of 10 µA at 400 V. Constructed with glass passivation and a glass-to-metal seal, it supports a surge current rating of 250 A. The component operates within a junction temperature range of -65°C to 200°C and is housed in a DO-4 (DO-203AA) stud mount package.

Single Diodes Feature Summary

• Glass passivated die construction with glass-to-metal seal for robust environmental protection
• Low forward voltage characteristic to minimize conduction losses
• High surge current capability supporting transient load conditions
• Extended operating temperature range suitable for demanding thermal environments

Single Diodes Applications

• Industrial power supply rectification
• Motor drive circuits
• Welding equipment power stages

Single Diodes Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm exact electrical tolerances and packaging variations. Confirm RoHS compliance status as historical data indicates non-compliance for this series. Validate the manufacturer source through authorized distribution channels to ensure authenticity. Check for recent Product Change Notices regarding manufacturing location or material updates before finalizing procurement specifications.

Single Diodes Selection Notes

Select the 1N1204B when a rugged, stud-mount rectifier with high thermal stability is required. Ensure the application voltage does not exceed the 400 V reverse rating under all operating conditions. Consider the DO-4 package dimensions for mechanical integration. Verify that the 12 A continuous current rating aligns with the system's thermal management capabilities. Evaluate the standard recovery speed suitability for the target switching frequency.

Single Diodes Part Context

This component belongs to the 1N1204 series of standard rectifiers manufactured by Microchip Technology. It utilizes a legacy DO-4 axial leaded package style adapted for stud mounting. The series is characterized by glass passivation technology, distinguishing it from plastic-encapsulated modern equivalents. It serves as a replacement for older military-grade or industrial-standard rectifiers requiring high reliability and thermal endurance.

Single Diodes Replacement Considerations

Direct substitutes include other 1N1204 variants from different manufacturers if pinout and package compatibility are verified. Ensure any replacement matches the 400 V reverse voltage and 12 A current ratings. Verify that the substitute also offers glass passivation if environmental sealing is critical. Cross-reference datasheets for forward voltage and leakage current similarities.