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1N4937L-T
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Product Detailed Parameters
- Description：DIODE STANDARD 600V 1A DO41
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- 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：15pF @ 4V, 1MHz
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Supplier Device Package：DO-41
- Operating Temperature - Junction：-65°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The Diodes Incorporated 1N4937L-T is a fast recovery rectifier diode housed in a DO-41 axial leaded package. It features a peak repetitive reverse voltage of 600V and an average rectified output current of 1.0A at +75°C ambient temperature. The device exhibits a maximum forward voltage drop of 1.2V at 1.0A, with a peak reverse current of 5.0µA at rated DC blocking voltage. Its peak reverse recovery time is specified at 200ns, while the non-repetitive peak forward surge current reaches 30A for an 8.3ms half-sine wave. Operating temperatures range from -65°C to +150°C.
Feature Summary
- Utilizes diffused junction technology for high efficiency switching applications
- Features low forward voltage drop and high current capability
- Includes surge overload rating up to 30A peak
- Constructed with molded plastic case material rated UL 94V-0
Applications
- Fast switching rectification in power supply circuits
- Inverter and converter systems
- Freewheeling diode implementations
Procurement Notes
Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status and specific packaging requirements prior to procurement. Review datasheet revision history for updates on electrical characteristics. Ensure storage conditions align with moisture sensitivity level specifications. Validate that the selected variant meets all necessary regulatory standards for the intended deployment environment.
Selection Notes
Evaluate thermal resistance and derating curves when designing for elevated ambient temperatures. Consider the 20% current derating requirement if utilizing capacitive loads. Assess reverse recovery time suitability for high-frequency switching operations. Compare total capacitance values against circuit noise immunity requirements. Verify lead solderability standards match assembly process capabilities.
Part Context
This component belongs to the 1N4933 through 1N4937 series of fast recovery rectifiers manufactured by Diodes Incorporated. The series covers reverse voltage ratings from 50V to 600V within identical mechanical packages. The manufacturer explicitly notes this part is not recommended for new designs, suggesting consideration of alternative RS1A-RS1J series components for future projects.
Replacement Considerations
Diodes Incorporated recommends using the RS1A through RS1J series as direct replacements for new designs. These alternatives maintain similar performance profiles while adhering to updated design guidelines. Verify pin compatibility and physical dimensions before implementing substitutions in existing layouts.
