1N4448WSGW

Overview

The Diotec Semiconductor 1N4448WSGW is a surface-mount small signal switching diode housed in an SOD-323 package. It features a maximum repetitive peak reverse voltage of 100 V and a DC blocking voltage of 75 V. The device supports a maximum average forward current of 250 mA and a non-repetitive peak forward surge current of 2.0 A for pulses up to 1 µs. Electrical characteristics include a reverse recovery time of less than 4 ns, typical junction capacitance of 4 pF at 0 V and 1 MHz, and low leakage current of 2.5 µA at 75 V. Power dissipation is rated at 500 mW on a PCB with 3 mm² copper pads.

Feature Summary

• Extremely fast switching speed with reverse recovery time under 4 ns
• Low junction capacitance for high-frequency signal processing
• Low leakage current ensuring minimal power loss in reverse bias
• Compliant with RoHS directives without exemptions

Applications

• High-speed switching circuits
• Signal processing applications
• Commercial and industrial grade electronics

Procurement Notes

Verify the specific suffix requirements against your design specifications. Confirm that the standard commercial/industrial grade meets your reliability needs, as automotive grades require distinct -Q or -AQ suffixes. Ensure compatibility with the SOD-323 footprint and check for any specific REACH or conflict mineral documentation required by your supply chain compliance protocols before finalizing orders.

Selection Notes

Select this component when designing circuits requiring rapid signal transition and low parasitic capacitance in a compact surface-mount form factor. The 100 V reverse voltage rating provides adequate headroom for general-purpose logic and interface protection tasks. Consider the thermal resistance and mounting pad size when calculating power dissipation limits in densely packed assemblies.

Part Context

This part belongs to the 1N4448 series of small signal switching diodes manufactured by Diotec Semiconductor. It serves as a surface-mount alternative to through-hole variants, offering similar electrical performance in a smaller SOD-323 case outline. The series is widely used in consumer and industrial electronics where space constraints and switching speed are critical design parameters.

Replacement Considerations

Consult official Diotec documentation for verified substitutes. Alternative case outlines such as SOD-123F (1N4448W) or DO-35 (1N4448) may be available from the same manufacturer but require footprint adaptation.