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1N4933
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Product Detailed Parameters
- Description：DIODE STANDARD 50V 1A AXIAL
- Series：-
- Mfr：onsemi
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：50 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 @ 50 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 1N4933 is an axial-lead fast-recovery rectifier designed for high-efficiency applications up to 250 kHz. It features a peak repetitive reverse voltage of 50 V and supports an average rectified forward current of 1.0 A at 75°C ambient temperature. The device exhibits a typical reverse recovery time of 150 ns, with a maximum surge current capability of 30 A. Operating junction temperatures range from -65°C to +150°C.
Feature Summary
- Fast recovery characteristics optimized for high-frequency efficiency
- Plastic epoxy molded case with UL flammability classification
- Corrosion-resistant external surfaces and readily solderable leads
Applications
- DC power supplies
- Inverters and converters
- Ultrasonic systems
- Choppers
- Free wheeling diodes
Procurement Notes
Verify the specific ordering suffix when purchasing. The base part number indicates standard bag packaging, while adding the RL suffix specifies tape and reel shipping. Confirm Pb-Free status requirements as the package is inherently lead-free. Ensure the selected variant matches the required delivery format for your assembly line.
Selection Notes
Select this component for circuits requiring fast switching speeds and low leakage current. The 50 V rating suits low-voltage rectification tasks. Verify thermal derating curves if operating near the maximum junction temperature limit. Consider the axial lead form factor for through-hole mounting constraints in the target design.
Part Context
This device belongs to the 1N493x series of fast-recovery rectifiers manufactured by onsemi. The series covers voltage ratings from 50 V to 600 V within the same physical DO-41 (Case 59) package outline. The 1N4933 specifically addresses the lower end of the voltage spectrum within this family.
Replacement Considerations
Cross-reference with other manufacturers' 1N4933 equivalents. Verify that substitute parts meet the 150 ns reverse recovery time requirement. Ensure replacement components maintain the 1.0 A average forward current rating and compatible axial lead dimensions.
