1N4448W

Overview

The Diotec Semiconductor 1N4448W is a small signal switching diode housed in the SOD-123F surface-mount package. It features a maximum average forward current of 150 mA and a repetitive peak reverse voltage of 100 V, with a DC reverse voltage rating of 75 V. The device exhibits a very low reverse recovery time of less than 4 ns and a typical junction capacitance of 2 pF at 0 V and 1 MHz. Forward voltage remains below 1.25 V at 150 mA, while leakage current is limited to 100 nA at 75 V. Operating temperatures range from -55°C to +150°C.

Feature Summary

• Extremely fast switching speed with reverse recovery time under 4 ns
• Low junction capacitance for high-frequency signal processing
• Low leakage current characteristics
• Compliant with RoHS, REACH, and Conflict Minerals regulations

Applications

• High-speed switching circuits
• Signal processing applications
• Commercial grade electronic systems

Procurement Notes

Verify that the specific part number matches the required voltage and current ratings for your circuit design. Confirm compliance requirements such as AEC-Q101 qualification if automotive standards are necessary, as this requires the -AQ suffix. Ensure the SOD-123F footprint aligns with your PCB layout specifications before finalizing procurement.

Selection Notes

Select this component when high-speed switching performance is critical due to its sub-4 ns reverse recovery time. The SOD-123F package offers a low-profile solution suitable for space-constrained designs. Consider the -AQ suffix if the application demands automotive-grade reliability and qualification standards beyond standard commercial grades.

Part Context

This component belongs to the 1N4148W/1N4448W family of SMD small signal switching diodes manufactured by Diotec Semiconductor. It serves as a surface-mount alternative to traditional through-hole variants, providing similar electrical characteristics in a compact form factor designed for automated insertion and modern PCB assembly techniques.

Replacement Considerations

The 1N4148W is a parameter-equivalent substitute within the same product family.