1N4448W-E3-18

Overview

The Vishay 1N4448W-E3-18 is a silicon epitaxial planar small signal fast switching diode housed in an SOD-123 surface-mount package. It features a maximum repetitive peak reverse voltage of 100 V and a continuous forward current rating of 300 mA. The device exhibits a typical reverse recovery time of 4 ns and a low junction-to-ambient thermal resistance of 440 K/W on an FR-4 board. Electrical characteristics include a forward voltage of up to 0.72 V at 5 mA and a leakage current of 2 µA at 75 V. Operating temperatures range from -55 °C to +150 °C.

Feature Summary

• Fast switching capability with a typical reverse recovery time of 4 ns
• Silicon epitaxial planar construction for reliable performance
• RoHS-compliant commercial grade material composition

Applications

• High-speed switching circuits
• General-purpose rectification applications
• Clamping and protection circuits

Procurement Notes

Verify the specific ordering suffix '-18' to confirm the 10,000-unit reel packaging format. Ensure that the base part number '1N4448W' matches the required electrical specifications for your design. Confirm RoHS compliance status as this variant represents the commercial grade offering without automotive qualification markings.

Selection Notes

Select this component when a compact SOD-123 footprint is required for high-speed switching tasks. The 100 V reverse voltage rating provides adequate margin for standard low-voltage logic and power rails. Consider the 4 ns recovery time for frequencies where faster alternatives like the 1N4148 are insufficient but ultra-fast diodes are unnecessary.

Part Context

This part belongs to the Vishay 1N4448W series of small signal fast switching diodes. It shares the same die and electrical characteristics as other variants in the family, differing primarily in packaging codes and qualification levels. The 'E3' designation indicates lead-free termination compliant with RoHS directives.

Replacement Considerations

Direct substitutes within the same Vishay family include 1N4448W-E3-08 (3K reel) and 1N4448W-HE3_A-18 (automotive qualified). Cross-manufacturer equivalents such as the 1N4148W may be considered if lower voltage ratings are acceptable.