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Product Detailed Parameters
- Description：RECTIFIER DIODE
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Technology：-
- Voltage - DC Reverse (Vr) (Max)：-
- Current - Average Rectified (Io)：-
- Voltage - Forward (Vf) (Max) @ If：-
- Speed：-
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：-
- Capacitance @ Vr, F：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Operating Temperature - Junction：-
- Grade：-
- Qualification：-
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Overview
The Microsemi Corporation 1N5811AUS is a surface-mount ultrafast recovery rectifier diode designed for high-reliability applications. It features a square end-cap MELF package with a 150 V maximum repetitive peak reverse voltage and a 6 A average forward rectified current rating. The device exhibits an extremely fast reverse recovery time of 30 ns, ensuring minimal switching losses in high-frequency circuits. It operates within a junction temperature range of -65°C to +175°C and maintains low forward voltage characteristics.
Feature Summary
- Hermetically sealed voidless-glass construction utilizing internal Category I metallurgical bonds for robust performance
- Ultrafast recovery characteristics enabling efficient operation in high-frequency switching environments
- Surface-mount square end-cap MELF configuration compatible with standard footprints
Applications
- High-reliability military and aerospace power conversion systems
- Switching mode power supplies requiring secondary rectification
- High-frequency DC-to-DC converters and step-down chopper drives
Procurement Notes
Verify the specific suffix 'AUS' against the manufacturer's official datasheet to confirm exact electrical tolerances and qualification levels. Ensure the ordering documentation explicitly references MIL-PRF-19500/477 compliance if military-grade reliability is required. Confirm that the surface-mount MELF package matches the intended PCB footprint design constraints.
Selection Notes
Select this component when space-constrained designs require hermetic sealing and high thermal stability up to 175°C. The ultrafast recovery profile makes it suitable for frequencies where standard rectifiers would incur excessive switching losses. Evaluate the 6 A current rating against peak load requirements to ensure adequate margin for transient conditions.
Part Context
This part belongs to the industry-recognized 1N58xx series of ultrafast recovery rectifiers. It serves as the surface-mount equivalent to through-hole axial lead variants, offering identical electrical performance in a compact form factor. The series is widely utilized in applications demanding high efficiency and long-term reliability under harsh environmental conditions.
Replacement Considerations
Direct replacements include other manufacturers' 1N5811 equivalents in SMD packages. Verify that substitute components match the 150 V reverse voltage, 6 A current rating, and 30 ns reverse recovery time specifications.
