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1N4937 BK TIN/LEAD
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Product Detailed Parameters
- Description：1A 600V TH RECTIFIER-FAST RECOVE
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Box
- 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)：200 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：DO-41
- Operating Temperature - Junction：-
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 1N4937 BK TIN/LEAD is a silicon rectifier diode designed for general-purpose applications. It features an axial leaded DO-41 plastic package with tin-lead terminal plating. The device supports a maximum average forward rectified current of 1.0 A and withstands repetitive peak reverse voltages up to 600 V. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 30 A, a maximum reverse leakage current of 5.0 µA, and a typical forward voltage drop of 1.2 V at rated conditions.
Feature Summary
- Utilizes fast switching technology for high efficiency in power conversion circuits
- Constructed with void-free molded plastic technique for enhanced reliability
- Features low forward voltage drop and low leakage current characteristics
Applications
- Fast switching rectification in power supplies
- Inverter and converter circuits
- Freewheeling diodes for consumer electronics
Procurement Notes
Verify the specific ordering suffix 'BK TIN/LEAD' against the manufacturer's official datasheet to confirm terminal plating composition and marking details. Ensure the selected variant matches the required RoHS compliance status, as standard tin-lead versions may differ from lead-free alternatives. Cross-reference the DO-41 package dimensions and thermal specifications with your design requirements before finalizing procurement.
Selection Notes
Select this component when a robust 600 V blocking capability and 1.0 A continuous current rating are required in a standard through-hole package. The DO-41 form factor provides reliable mounting for general-purpose rectification tasks. Consider the specific forward voltage and reverse recovery time parameters to ensure compatibility with the target circuit's switching frequency and efficiency goals.
Part Context
This part belongs to the widely recognized 1N493x series of fast recovery plastic rectifiers. The series covers a voltage range from 50 V to 600 V, with the 1N4937 specifically designated for the 600 V rating. It is commonly used in industrial and consumer applications where standard rectification performance and mechanical durability are prioritized.
Replacement Considerations
Compatible substitutes include Vishay 1N4937, Frontier 1N4937-B, and Starsea 1N4937G. Verify that alternative sources maintain identical DO-41 packaging, 600 V reverse voltage rating, and 1.0 A current handling capabilities.
