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1N4447TR
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Product Detailed Parameters
- Description：DIODE STANDARD 100V DO204AH
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：100 V
- Current - Average Rectified (Io)：-
- Voltage - Forward (Vf) (Max) @ If：-
- Speed：Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：-
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-204AH (DO-35)
- Operating Temperature - Junction：175°C (Max)
- Grade：-
- Qualification：-
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Overview
The Fairchild Semiconductor 1N4447TR is a small signal switching diode housed in the DO-35 (DO-204AH) axial leaded package. It features a peak reverse voltage of 100 V and a maximum forward current of 200 mA. The device exhibits a fast recovery time of 4 ns with a forward voltage drop of 1 V at rated current. It operates within a temperature range of -65 °C to +175 °C and dissipates up to 500 mW of power.
Feature Summary
- Fast switching capability with 4 ns reverse recovery time
- High thermal stability supporting operation up to 175 °C
- Robust surge current handling for transient protection
Applications
- General purpose rectification in low-power circuits
- Signal clipping and clamping applications
- Protection against voltage transients in sensitive electronics
Procurement Notes
Verify the manufacturer designation on the component marking, as Fairchild Semiconductor assets were acquired by ON Semiconductor. Ensure the ordering suffix matches the specific tape and reel configuration required for automated assembly processes. Confirm RoHS compliance status through official documentation prior to integration.
Selection Notes
Select this component when a standard silicon switching diode with 100 V blocking capability is required. The DO-35 package suits through-hole mounting constraints. Consider the 4 ns recovery speed for high-frequency signal processing tasks where minimal delay is critical compared to slower general-purpose rectifiers.
Part Context
This part belongs to the widely used 1N444x series of small signal switching diodes. These components are industry-standard replacements for older germanium diodes, offering superior performance in terms of speed and leakage current while maintaining compatibility with traditional axial leaded footprints.
Replacement Considerations
Equivalent parts include the 1N4448 and 1N914. Verify pinout compatibility and ensure the substitute meets the 100 V reverse voltage requirement. Check if the alternative offers identical recovery times for high-speed switching applications.
