1N4448W

Overview

The SMC Diode Solutions 1N4448W is a fast switching surface mount diode designed for general purpose applications. It features a peak repetitive reverse voltage of 75 V and an average rectified output current of 250 mA. The device exhibits a forward voltage of 1 V at 100 mA and a maximum reverse leakage current of 2.5 µA at 75 V. Electrical characteristics include a reverse recovery time of 4 ns and a junction-to-ambient thermal resistance of 250 °C/W. The component operates within a junction temperature range of -65°C to 150°C and utilizes the SOD-323 package.

Feature Summary

• Fast switching speed with low reverse recovery time
• Low forward voltage drop for high conductance
• Small surface mount package suitable for automated insertion

Applications

• General purpose switching circuits
• High frequency signal processing
• Clamping and protection applications

Procurement Notes

Verify the specific manufacturer designation, as the 1N4448W part number is utilized by multiple semiconductor producers including Diodes Incorporated, MCC, and SMC. Confirm that the selected unit originates from SMC Diode Solutions to ensure compliance with their specific datasheet parameters and quality standards. Cross-reference the ordering code suffixes to match the required packaging format.

Selection Notes

Select this component when a small form factor is required for high-speed switching tasks. The SOD-323 package offers space efficiency compared to through-hole alternatives while maintaining robust electrical performance. Ensure the design accounts for the 250 mA continuous current limit and the 75 V reverse voltage rating under all operating conditions.

Part Context

This device belongs to the family of silicon planar switching diodes characterized by high speed and low capacitance. It serves as a surface mount equivalent to traditional axial leaded switching diodes, facilitating modern PCB assembly techniques. The technology supports reliable operation in compact electronic designs requiring efficient signal rectification or isolation.