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1N4448WS
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Product Detailed Parameters
- Description：75V INDEPENDENT TYPE 1.25V@150MA
- Series：-
- Mfr：Shenzhen Slkormicro Semicon Co., Ltd.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：75 V
- Current - Average Rectified (Io)：250mA
- Voltage - Forward (Vf) (Max) @ If：1.25 V @ 150 mA
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：4 ns
- Current - Reverse Leakage @ Vr：2.5 µA @ 75 V
- Capacitance @ Vr, F：4pF @ 0V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：SC-76, SOD-323
- Supplier Device Package：SOD-323
- Operating Temperature - Junction：-65°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The 1N4448WS is a small-signal switching diode manufactured by Shenzhen Slkormicro Semicon Co., Ltd. It features a peak reverse voltage of 100 V and an average forward current rating of 150 mA. The device exhibits a fast recovery time of 4 ns and a maximum forward voltage of 1 V at 100 mA. Reverse leakage current is specified at 25 nA. It operates within a junction temperature range of -65°C to +175°C and is housed in the SOD-323F surface-mount package.
Feature Summary
- High conductance design for efficient signal switching
- Fast switching speed with minimal recovery delay
- Compact surface-mount footprint for automated assembly
Applications
- General purpose high-speed switching circuits
- Clamping and protection applications
- Signal demodulation in communication equipment
Procurement Notes
Verify the manufacturer designation as Shenzhen Slkormicro Semicon Co., Ltd. against official datasheets. Confirm the SOD-323F package dimensions and electrical parameters match project requirements. Ensure compliance with RoHS directives if applicable. Cross-reference part numbers with authorized distributors to avoid counterfeit components.
Selection Notes
Select this component for designs requiring fast recovery characteristics in a compact SMD form factor. Compare the 100 V reverse voltage and 150 mA forward current limits against circuit demands. Evaluate thermal management needs given the 175°C maximum junction temperature. Consider the low leakage current for sensitive analog or RF signal paths.
Part Context
This component belongs to the standard small-signal switching diode category, often used as a replacement for legacy through-hole devices like the 1N4448 in modern PCB layouts. The SOD-323F package allows for higher density mounting compared to axial leads. It serves as a fundamental discrete semiconductor element for logic level shifting and signal routing.
Replacement Considerations
Direct substitutes include the 1N4448W from other manufacturers offering identical SOD-123/SOD-323F footprints and electrical specifications. Verify pinout compatibility and thermal resistance values when swapping between different brand offerings.
