1N4526

Overview

The Microchip Technology 1N4526 is a standard silicon power rectifier diode designed for general-purpose rectification applications. It features a unidirectional current flow capability with a maximum average forward rectified current of 40 Amperes and a repetitive peak reverse voltage rating of 400 Volts. The device utilizes a stud mount configuration within the DO-203AB (DO-5) axial leaded package, providing robust mechanical stability for high-current industrial environments.

Feature Summary

• High current handling capacity suitable for demanding power conversion tasks
• Robust stud mount construction ensuring secure mechanical attachment to heat sinks
• Standard silicon junction technology offering reliable reverse blocking performance

Applications

• Industrial power supply rectification circuits
• Battery charging systems requiring high current throughput
• Motor drive inverter bridge configurations

Procurement Notes

Verify the specific manufacturer source, as this part number has been produced by multiple vendors including Motorola and Microsemi. Confirm RoHS compliance status, as historical versions may be non-compliant. Ensure the stud mounting hardware matches your thermal management design requirements before finalizing procurement.

Selection Notes

Select this component when a 40A continuous current rating and 400V reverse voltage are required in an axial package format. Consider the thermal resistance characteristics of the stud mount interface for adequate heat dissipation. Verify that the forward voltage drop meets the efficiency targets of the specific power stage design.

Part Context

This component belongs to the legacy standard rectifier family, originally defined by JEDEC specifications. It serves as a fundamental discrete semiconductor device for converting alternating current to direct current in heavy-duty electrical systems. The DO-5 package remains a standard form factor for high-power axial diodes in industrial equipment.

Replacement Considerations

Equivalent parts include the 1N4527 for higher voltage ratings or other 40A 400V stud-mount diodes from manufacturers like Vishay or Littelfuse. Ensure pinout compatibility and thermal interface dimensions match the existing PCB or chassis layout when substituting.