1N6658R

Overview

The Microchip Technology 1N6658R is a silicon rectifier diode designed for general-purpose applications. It features a single-phase configuration with a maximum average forward rectified current of 20 amperes and a peak repetitive reverse voltage rating of 100 volts. The device utilizes a TO-59 metal package, offering robust thermal performance and mechanical stability. It operates within a junction temperature range of -65°C to +175°C, ensuring reliability in demanding environments. The component is constructed from high-purity silicon to minimize leakage currents and maintain stable forward voltage characteristics under varying load conditions.

Feature Summary

• High current handling capability with a 20A average forward rectified current rating
• Wide operating temperature range supporting extreme environmental conditions up to 175°C junction temperature
• Robust metal TO-59 package construction for enhanced thermal dissipation and mechanical durability
• Standard recovery characteristics suitable for general-purpose rectification tasks

Applications

• Industrial power supply rectification circuits
• Battery charging systems requiring high current capacity
• Automotive electronics exposed to wide temperature variations
• General-purpose DC power conversion modules

Procurement Notes

Verify the specific suffix 'R' against the official Microchip datasheet to confirm tape-and-reel packaging or specific binning requirements. Ensure compliance with RoHS directives if required by your application, as historical data indicates some variants may not be fully compliant. Cross-reference the exact part number with authorized distributors to confirm availability and authenticity, as lead times can vary significantly for through-hole metal packages.

Selection Notes

Select this component when designing circuits that require high surge current handling and reliable operation at elevated temperatures. The TO-59 package is ideal for applications where superior heat sinking is necessary compared to plastic encapsulated alternatives. Consider the 100V reverse voltage rating to ensure adequate margin for transient spikes in the target power supply design. Evaluate thermal management strategies given the 20A continuous current capability.

Part Context

The 1N6658R belongs to the standard rectifier diode family produced by Microchip Technology, formerly known for its extensive discrete semiconductor portfolio. This series is engineered for industrial and automotive markets where long-term reliability and high current density are critical. The TO-59 form factor represents a legacy but highly effective metal case style, often preferred in high-power applications over modern surface-mount options due to its inherent thermal conductivity and mounting flexibility.

Replacement Considerations

Consult Microchip's official cross-reference tools for direct equivalents. Generic replacements must match the 20A current, 100V reverse voltage, and TO-59 package constraints. Verify that substitute parts meet the same thermal and electrical specifications to ensure circuit integrity without redesign.