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1N4937RL
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Product Detailed Parameters
- Description：DIODE STANDARD 600V 1A AXIAL
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：600 V
- Current - Average Rectified (Io)：1A
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 1 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：300 ns
- Current - Reverse Leakage @ Vr：5 µA @ 600 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Supplier Device Package：Axial
- Operating Temperature - Junction：-65°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The onsemi 1N4937RL is an axial-lead fast-recovery rectifier designed for high-efficiency applications. It features a 600 V peak repetitive reverse voltage and supports a 1.0 A average rectified forward current. The device exhibits a typical reverse recovery time of 150 ns, enabling operation at frequencies up to 250 kHz. Electrical characteristics include a maximum instantaneous forward voltage of 1.2 V at 150°C and a non-repetitive peak surge current rating of 30 A. Operating junction temperatures range from -65°C to +150°C.
Feature Summary
- Fast switching capability with a typical recovery time of 150 nanoseconds for high efficiency
- Glass-passivated junction construction providing low leakage current
- High forward surge current capability rated at 30 amperes
- Available in tape and reel packaging via the RL suffix
Applications
- DC power supplies
- Inverters and converters
- Ultrasonic systems
- Choppers
- Free wheeling diodes
Procurement Notes
Verify that the ordering suffix 'RL' corresponds specifically to the tape and reel shipping configuration as defined in the official datasheet. Confirm the part number includes the correct voltage rating for the 1N4937 variant. Ensure compliance with environmental standards by checking for the Pb-Free designation if required by the application specifications.
Selection Notes
Select this component when a 600 V blocking voltage is required alongside fast recovery characteristics. The 1.0 A current rating suits moderate power levels. Consider the thermal resistance of 65°C/W for heat dissipation planning. Verify that the operating frequency requirements align with the 250 kHz limit specified for the series.
Part Context
This component belongs to the 1N493x series of fast-recovery rectifiers manufactured by onsemi. The series covers reverse voltages from 50 V to 600 V, sharing common mechanical and electrical traits such as the DO-41 package and glass-passivated junction technology. The 1N4937 represents the highest voltage option within this specific lineup.
Replacement Considerations
Compatible substitutes include other manufacturers' 1N4937 variants or parts from the same family like the 1N4936, provided the voltage ratings match the circuit requirements.
