1N4511

Overview

The Microchip Technology 1N4511 is a standard recovery rectifier diode designed for high-voltage applications. It features a maximum DC reverse voltage of 1200 V and an average forward current rating of 22 A. The device exhibits a typical forward voltage drop of 1.2 V at 30 A and maintains a low reverse leakage current of 10 µA at its rated voltage. Operating within a junction temperature range of -65°C to 200°C, it utilizes a DO-4 (DO-203AA) axial leaded package with stud mounting capabilities.

Feature Summary

• High voltage blocking capability suitable for demanding power conversion environments
• Robust thermal performance supporting extended operating temperatures up to 200°C
• Standard recovery characteristics optimized for general-purpose rectification tasks

Applications

• Industrial power supply rectification circuits
• High voltage DC power distribution systems
• Welding equipment power stages

Procurement Notes

Verify component authenticity through authorized Microchip Technology channels or certified distributors. Confirm the specific manufacturing date code and lot traceability required for your assembly process. Ensure compliance with relevant environmental regulations, noting that this component does not meet RoHS standards. Validate mechanical fitment for the DO-4 package before finalizing procurement orders.

Selection Notes

Select the 1N4511 when circuit requirements demand high reverse voltage withstand alongside substantial continuous current handling. Consider the axial leaded construction for through-hole mounting strategies in industrial enclosures. Evaluate thermal management solutions given the wide operating temperature range and stud mount option. Compare against alternative standard recovery diodes if specific switching speed parameters differ from application needs.

Part Context

This component belongs to the S/R21 series of rectifiers manufactured by Microchip Technology. The series targets robust discrete semiconductor solutions for industrial and commercial power electronics. The 1N4511 designation follows traditional JEDEC numbering conventions for silicon rectifiers, ensuring broad industry recognition and compatibility with legacy design specifications.

Replacement Considerations

Consult official Microchip documentation for qualified substitute part numbers within the same series. Verify electrical parameter equivalence for reverse voltage and forward current ratings before substitution.