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Product Detailed Parameters
- Description：DIODE STANDARD 200V 3A DO201
- Series：-
- Mfr：Diotec Semiconductor
- Package：Cut Tape (CT),Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：200 V
- Current - Average Rectified (Io)：3A
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 3 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：500 ns
- Current - Reverse Leakage @ Vr：5 µA @ 200 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-201AA, DO-27, Axial
- Supplier Device Package：DO-201
- Operating Temperature - Junction：-50°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The BY397 is a fast silicon rectifier diode manufactured by Diotec Semiconductor, designed for high-speed switching applications. It features a single configuration in a DO-201 axial leaded package. Key electrical parameters include a maximum repetitive peak reverse voltage (Vr) of 200 V and an average forward rectified current (If) of 3 A. The device exhibits a low forward voltage drop (Vf) of 1.3 V at rated current and a maximum reverse leakage current (Ir) of 5 µA. It supports a surge current of 50 A and operates within a junction temperature range of -55 °C to +175 °C, with a typical recovery time of 50 ns.
Feature Summary
- Fast recovery characteristics suitable for high-frequency switching circuits
- High thermal stability with a maximum operating junction temperature of 175 °C
- Robust construction capable of handling high surge currents up to 50 A
Applications
- High-frequency rectification in power supplies
- Free-wheeling diodes in inductive load circuits
- General-purpose fast recovery applications
Procurement Notes
Verify the specific datasheet revision when sourcing, as manufacturing updates may occur. Confirm that the DO-201 package dimensions match your PCB footprint requirements. Ensure the selected component meets the required voltage and current ratings for your specific circuit design before finalizing procurement.
Selection Notes
Select the BY397 when a standard fast recovery diode is needed for 200 V applications requiring 3 A continuous current. Consider its 175 °C junction temperature rating for environments with elevated thermal loads. Compare its 50 ns recovery time against slower general-purpose diodes if switching speed is critical to system performance.
Part Context
The BY397 belongs to Diotec Semiconductor's line of fast silicon rectifier diodes. These components are engineered for reliability in demanding electronic environments. The DO-201 package provides robust mechanical support for through-hole mounting, making it a common choice for industrial and consumer electronics where durability and ease of assembly are prioritized.
Replacement Considerations
Check for direct equivalents such as the 1N5408 series if lower speed is acceptable, though recovery times will differ. Verify pinout compatibility with existing designs when substituting. Ensure any replacement part meets or exceeds the 200 V reverse voltage and 3 A forward current specifications.
