1N4448/TR

Overview

The Microchip Technology 1N4448/TR is a small signal switching diode designed for high-speed applications. It features a peak reverse voltage of 100 V and a maximum forward current of 300 mA. The device exhibits a fast recovery time of 4 ns, ensuring efficient performance in digital circuits. It operates within a temperature range of -65°C to +175°C and is housed in a DO-35 through-hole package.

Feature Summary

• High conductance characteristics optimized for fast switching operations
• Robust thermal stability supporting extended industrial temperature ranges
• Low leakage current ensuring minimal power loss in reverse bias

Applications

• General purpose rectification in electronic circuits
• Clamping and protection in digital logic systems
• Signal demodulation in communication equipment

Procurement Notes

Verify the specific manufacturer designation, as the 1N4448 part number is utilized by multiple semiconductor vendors including onsemi and Microchip. Confirm that the TR suffix corresponds to the correct reel packaging configuration required for your assembly process. Ensure compliance with RoHS and REACH standards applicable to your region before finalizing procurement orders.

Selection Notes

Select this component when a standard silicon switching diode with moderate current handling is required. The DO-35 package facilitates easy through-hole mounting for prototyping or low-volume production. Consider the 4 ns recovery time suitability for frequencies up to typical audio or low-frequency RF ranges rather than high-speed microwave applications.

Part Context

This component belongs to the widely recognized 1N4448 series of general-purpose switching diodes. The 'TR' suffix typically indicates tape and reel packaging, distinguishing it from bulk or cut-tape variants. Microchip Technology produces this variant alongside other manufacturers who utilize the same JEDEC-style numbering system for similar electrical specifications.

Replacement Considerations

Public confirmed substitute part numbers include 1N4448W and 1N914. Verify pinout compatibility and thermal dissipation requirements when substituting with these equivalents.