1N6821R

Overview

The Microchip Technology 1N6821R is a standard rectifier diode designed for general-purpose applications. It features a single configuration with a maximum repetitive peak reverse voltage of 400V and an average forward rectified current of 2A. The device utilizes a DO-41 axial leaded package, suitable for through-hole mounting. Key electrical characteristics include a maximum DC blocking voltage of 400V and a non-repetitive peak surge current rating of 60A at 8.3ms. The component operates within a junction temperature range of -65°C to +175°C, ensuring reliability in demanding thermal environments.

Feature Summary

• High-temperature operation capability up to 175°C junction temperature
• Robust surge current handling for transient protection
• Standard axial leaded package for reliable through-hole integration

Applications

• General-purpose rectification in power supplies
• Reverse polarity protection circuits
• Freewheeling diodes in inductive load switching

Procurement Notes

Verify the specific suffix 'R' against official Microchip documentation to confirm packaging or tape-and-reel specifications, as generic part numbers may vary by distributor listing. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability. Confirm RoHS compliance status if required for your assembly process, as historical data indicates potential variations. Cross-reference the manufacturer part number with the latest datasheet revision to validate all electrical parameters before finalizing orders.

Selection Notes

Select this component when a robust, high-temperature silicon rectifier is required for through-hole designs. The 2A current rating and 400V blocking voltage make it suitable for medium-power AC-to-DC conversion stages. Consider the thermal derating curves provided in the datasheet to ensure safe operation under continuous load conditions. Compare against fast recovery alternatives if switching speed is critical, though this device is optimized for standard frequency applications.

Part Context

The 1N6821R belongs to the broader family of standard rectifier diodes manufactured by Microchip Technology. These components are widely used in industrial and consumer electronics for basic power conversion tasks. The part shares functional similarities with other industry-standard rectifiers but offers specific performance margins defined by Microchip's manufacturing processes. It serves as a fundamental building block in power supply architectures requiring reliable unidirectional current flow.

Replacement Considerations

Direct substitutes must match the 2A forward current, 400V reverse voltage, and DO-41 package. Verify pinout compatibility and thermal resistance values. Common equivalents include 1N5408 variants, but always confirm exact electrical limits and physical dimensions against the original design requirements.