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1N4938_T50R
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Product Detailed Parameters
- Description：DIODE STANDARD 200V 500MA DO35
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：200 V
- Current - Average Rectified (Io)：500mA
- Voltage - Forward (Vf) (Max) @ If：1 V @ 100 mA
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：50 ns
- Current - Reverse Leakage @ Vr：100 nA @ 75 V
- Capacitance @ Vr, F：5pF @ 0V, 1MHz
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-35
- Operating Temperature - Junction：175°C (Max)
- Grade：-
- Qualification：-
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Overview
The onsemi 1N4938_T50R is a small signal silicon rectifier diode housed in the DO-35 axial leaded package. It provides a maximum repetitive reverse voltage of 200 V and supports an average rectified forward current of 500 mA. The device features a maximum forward voltage of 1.0 V at 100 mA and a reverse recovery time of 50 ns. Electrical characteristics include a breakdown voltage of 200 V, a total capacitance of 5 pF, and a power dissipation rating of 500 mW. Operating junction temperatures reach up to 175 °C.
Feature Summary
- Standard small signal rectification with low leakage current
- High surge current capability for transient protection
- Suitable for general-purpose switching applications
Applications
- General purpose rectification in electronic circuits
- Clamping and protection circuits
- Signal demodulation
Procurement Notes
Verify that the T50R suffix corresponds to the specific tape and reel packaging configuration required by your assembly line. Confirm RoHS compliance status as datasheets may vary by manufacturing date. Ensure the component meets the thermal resistance requirements for your specific PCB layout and ambient temperature conditions before finalizing procurement.
Selection Notes
Select this component when a 200 V blocking voltage and 500 mA continuous current are required in a compact DO-35 footprint. Consider the 50 ns reverse recovery time for high-speed switching needs. Evaluate the 500 mW power dissipation limit against your circuit's thermal environment to ensure reliable operation within the specified junction temperature range.
Part Context
This part belongs to the widely used 1N493x series of small signal diodes. Originally documented under Fairchild Semiconductor, the product line was transferred to onsemi following industry consolidation. The 1N4938 variant specifically targets applications requiring higher voltage ratings compared to lower-voltage siblings like the 1N4933 or 1N4934.
Replacement Considerations
Cross-reference with other manufacturers' 1N4938 equivalents such as those from Microchip Technology. Verify that substitute parts match the 200 V reverse voltage and 500 mA forward current specifications. Check for identical DO-35 package dimensions to ensure mechanical compatibility.
