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1N4946/TR
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Product Detailed Parameters
- Description：DIODE STANDARD 600V 1A AXIAL
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：600 V
- Current - Average Rectified (Io)：1A
- Voltage - Forward (Vf) (Max) @ If：1.3 V @ 1 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：250 ns
- Current - Reverse Leakage @ Vr：1 µA @ 600 V
- Capacitance @ Vr, F：25pF @ 12V, 1MHz
- Mounting Type：Through Hole
- Package / Case：A, Axial
- Supplier Device Package：A, Axial
- Operating Temperature - Junction：-65°C ~ 175°C
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Overview
The Microchip Technology 1N4946/TR is a fast recovery rectifier diode designed for surface-mount applications. It features a maximum repetitive peak reverse voltage of 600 V and an average forward rectified current rating of 1 A. The device utilizes a UFR, FRR SQ SMT package configuration. Key electrical characteristics include a maximum reverse leakage current of 1 µA at 600 V and a typical reverse recovery time of 250 ns. The component operates within a junction temperature range of -65°C to +175°C.
Feature Summary
- Fast recovery performance with specified reverse recovery time suitable for high-speed switching applications
- High thermal stability supporting operation across extended industrial temperature ranges
- Surface-mount construction enabling automated assembly processes
Applications
- High-frequency power supply circuits
- Free-wheeling rectification in inductive loads
- DC-DC converter output stages
Procurement Notes
Verify the specific suffix designation against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure the selected variant matches the required surface-mount footprint and handling constraints for your manufacturing process. Cross-reference datasheet revisions to confirm compliance with current environmental standards.
Selection Notes
Select this component when a 600 V blocking capability and 1 A continuous current rating are required in a compact surface-mount form factor. Consider the 250 ns reverse recovery characteristic for efficiency in high-frequency topologies. Evaluate thermal management requirements based on the specified junction temperature limits and ambient operating conditions.
Part Context
This part belongs to the standard rectifier family manufactured by Microchip Technology. It serves as a surface-mount alternative to through-hole variants within the same electrical specification class. The component is categorized under general-purpose fast recovery rectifiers intended for reliable performance in commercial and industrial electronic systems.
Replacement Considerations
Publicly confirmed parameter-equivalent substitutes include the 1N4946-1 (through-hole) and RL105F (surface-mount). Verify pinout compatibility and package dimensions before substitution.
