1N1434

Single Diodes Overview

The Microchip Technology 1N1434 is a silicon power rectifier diode designed for high-current applications. It features a maximum continuous forward current of 30A and a repetitive peak reverse voltage (VRRM) up to 1200V. The device utilizes a stud mount configuration within the DO-5 (DO-203AB) package, facilitating efficient thermal management through direct mounting to heatsinks. It offers an 800A surge rating and employs glass passivated die construction with glass-to-metal sealing for robust performance in demanding environments.

Single Diodes Feature Summary

• High surge current capability rated at 800A
• Glass passivated die construction for reliability
• Stud mount design for effective heat dissipation

Single Diodes Applications

• Industrial power supply rectification
• Motor drive circuits
• Welding equipment power stages

Single Diodes Procurement Notes

Verify the specific manufacturer source, as historical data links this part number to Microsemi Corporation prior to its acquisition by Microchip Technology. Confirm that the required VRRM rating aligns with your system's peak inverse voltage requirements, as specifications may vary slightly between legacy Microsemi and current Microchip production runs. Ensure the DO-5 stud mount interface matches your mechanical assembly constraints.

Single Diodes Selection Notes

Select this component when high current handling and ruggedness are prioritized over compact surface-mount solutions. The stud mount package necessitates appropriate thermal interface materials and mounting hardware. Consider the 1200V blocking capability for medium-voltage AC-DC conversion tasks where standard axial leads are insufficient for thermal or current demands.

Single Diodes Part Context

This component belongs to the family of standard recovery rectifiers historically managed by Microsemi Corporation. Following corporate acquisitions, Microchip Technology now manages the portfolio. The 1N1434 is distinct from lower-current variants like the 1N1435 and higher-voltage counterparts in the same series, serving specifically as a high-power general-purpose rectifier.

Single Diodes Replacement Considerations

Direct substitutes include the 1N1435 and 1N1436, though these differ in current ratings. Verify compatibility with ST3010 or ST3010A equivalents if pinout and thermal characteristics match. Always cross-reference datasheets for exact electrical limits before substitution.