1N4438FS

Overview

The 1N4438FS is a single-phase standard bridge rectifier manufactured by Microchip Technology. It features a chassis and stud mount configuration designed for high-power applications. The device supports a maximum repetitive peak reverse voltage of 600 V. It utilizes glass passivated die technology to ensure reliability. The component is hermetically sealed to protect internal structures. It operates with a soft recovery characteristic to minimize switching noise. The junction temperature rating reaches 160°C for thermal stability. An isolation voltage of 2000 VDC is provided for safety. The diode type is classified as a stud mount unit.

Feature Summary

• Glass passivated die construction for enhanced durability
• Hermetically sealed design ensuring environmental protection
• Soft recovery characteristics for reduced electromagnetic interference
• Chassis and stud mount configuration for secure installation

Applications

• Industrial control systems requiring robust rectification
• Automation equipment utilizing high-voltage DC conversion
• Power supplies demanding chassis-mounted solutions

Procurement Notes

Verify the manufacturer marking matches Microchip Technology or its predecessor entities accurately. Confirm the suffix FS denotes the specific stud mount variant. Check datasheet revisions for any changes in mechanical dimensions. Ensure the package type aligns with the required chassis mounting hardware. Validate the voltage ratings against the application circuit requirements before purchase.

Selection Notes

Choose this component when a single-phase bridge rectifier with stud mounting is necessary. Select it for applications requiring 600 V reverse voltage capability. Consider the 160°C junction temperature limit for thermal management. Opt for this part if hermetic sealing and glass passivation are critical. Evaluate the need for soft recovery behavior in high-frequency circuits.

Part Context

This part belongs to the family of single-phase bridge rectifiers from Microchip Technology. It serves as a power conversion component in electronic circuits. The device replaces older variants from Microsemi Corporation under similar numbering. It provides a standardized solution for industrial power electronics. The stud mount style distinguishes it from surface-mount alternatives.

Replacement Considerations

Consult official cross-reference lists for direct substitutes. Verify electrical parameters match exactly before substitution. Ensure mechanical mounting compatibility with existing chassis designs. Check thermal performance specifications for equivalent heat dissipation.