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1N4246US/TR
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Product Detailed Parameters
- Description：UFR,FRR
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：-
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Overview
The Microchip Technology 1N4246US/TR is a single-element standard fast recovery rectifier diode designed for surface-mount applications. It features a maximum repetitive peak reverse voltage of 400V and an average forward rectified current of 1A. The device utilizes a square SMT package configuration with a tape and reel shipping format. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 30A, a maximum forward voltage of 1.2V at rated current, and a typical reverse current of 25uA. The component supports a wide operating temperature range from -65°C to +175°C.
Feature Summary
- Fast recovery rectification capability suitable for high-frequency switching applications
- Surface-mount construction in a compact square package for automated assembly
- High thermal stability with extended junction temperature ratings
Applications
- General-purpose rectification in power supply circuits
- Freewheeling diodes in inductive load protection
- Reverse polarity protection in electronic systems
Procurement Notes
Verify the specific manufacturer source, as the 1N4246 designation appears across multiple vendors including Semtech and Allied. Confirm that the US/TR suffix correctly denotes the Microchip Technology square SMT package and tape-and-reel delivery method. Ensure compatibility with RoHS requirements if applicable to your manufacturing standards. Cross-reference datasheets to confirm exact pinout and mechanical dimensions before finalizing procurement.
Selection Notes
Select this component when a standard 1A, 400V rectifier is required in a surface-mount form factor. The fast recovery characteristic makes it appropriate for applications where standard recovery times are insufficient. Consider the square SMT package constraints regarding PCB footprint and thermal dissipation capabilities compared to axial leaded alternatives.
Part Context
This part belongs to the 1N42xx series of silicon rectifiers, adapted for surface-mount technology. While traditional 1N4246 parts are often axial DO-41 devices, the US/TR variant specifically indicates a Microchip Technology surface-mount implementation. This evolution allows for higher density PCB layouts while maintaining the core electrical specifications of the legacy through-hole counterpart.
Replacement Considerations
Direct substitutes include other 1N4246 variants in SMT packages from different manufacturers, such as Vishay or ON Semiconductor equivalents. Verify that replacement parts match the 400V reverse voltage and 1A current ratings. Ensure the substitute also offers comparable fast recovery characteristics and fits the same square SMT footprint.
