1N1438

Single Diodes Overview

The Microchip Technology 1N1438 is a silicon power rectifier diode designed for high-current industrial applications. It features a single-phase configuration with a maximum repetitive peak reverse voltage of 600 V and an average forward rectified current rating of 40 A. The device utilizes a stud mount package, specifically DO-203AB (DO-5), which facilitates efficient thermal management through direct mounting to heatsinks. This component is engineered for robust performance in demanding power conversion environments.

Single Diodes Feature Summary

• High current handling capability suitable for heavy-duty power rectification
• Robust stud mount construction for effective thermal dissipation
• Reliable silicon junction technology for industrial durability

Single Diodes Applications

• Industrial automation power supplies
• General purpose power rectification circuits
• DC power distribution systems

Single Diodes Procurement Notes

Verify the specific manufacturer source, as this part number has been produced by multiple entities including Microsemi and International Rectifier. Confirm the exact datasheet version matches your thermal and electrical requirements. Ensure the package type corresponds to your mechanical assembly constraints. Request official documentation to validate specifications before integration into critical designs.

Single Diodes Selection Notes

Select this component when a 600 V blocking voltage and 40 A continuous current are required in a stud-mount form factor. Consider the thermal resistance characteristics of the DO-203AB package for heatsink design. Evaluate the reverse recovery time if used in high-frequency switching applications. Ensure the operating temperature range aligns with the system's environmental conditions.

Single Diodes Part Context

This device belongs to the general-purpose silicon power rectifier category. It is part of a long-standing series of axial and stud-mounted diodes widely used in legacy and modern industrial equipment. The 1N1438 serves as a standard replacement for older rectifier designs requiring high current capacity in a compact, thermally efficient package.

Single Diodes Replacement Considerations

Equivalent parts include the 1N1438R from various manufacturers. Verify pinout compatibility and thermal interface requirements when substituting. Cross-reference datasheets from Microchip, Vishay, or ON Semiconductor for identical electrical ratings.