1N4148UB2R

Single Diodes Overview

The Microchip Technology 1N4148UB2R is a small signal switching diode designed for surface mount applications. It features a maximum DC reverse voltage of 75 V and an average forward rectified current of 200 mA, with a peak repetitive forward surge current rating of 1 A. The device utilizes a UB2 package, specifically a 2-SMD, No Lead configuration. Key electrical characteristics include a reverse recovery time (trr) of 5 ns, indicating high-speed switching capability. This component is classified as a silicon planar junction diode suitable for computer and signal processing circuits.

Single Diodes Feature Summary

• High-speed switching performance with a 5 ns reverse recovery time
• Surface mount construction in a compact UB2 package
• Designed for small signal and computer diode applications

Single Diodes Applications

• Computer logic circuits
• Signal processing systems
• General purpose switching applications

Single Diodes Procurement Notes

Verify the specific suffix to confirm packaging type; 'R' typically denotes tape and reel, while 'TR' confirms tape and reel shipping. Ensure the UB2 package variant matches the PCB footprint requirements. Confirm RoHS compliance status if required by assembly specifications. Cross-reference datasheet revisions for any parameter updates before final design integration.

Single Diodes Selection Notes

Select this component when a hermetic or robust ceramic-style surface mount diode is required for high-speed switching. Compare the 75 V reverse voltage and 200 mA current ratings against circuit demands. Consider the 5 ns reverse recovery time for high-frequency applications. Verify that the UB2 package dimensions fit the available board space compared to standard SOD packages.

Single Diodes Part Context

This part belongs to the 1N4148 family of small signal switching diodes, adapted for surface mount technology. While traditional 1N4148 devices often use axial leaded packages, the UB2 variant provides a compact alternative for automated assembly. It maintains similar electrical characteristics to through-hole counterparts but offers different mechanical mounting properties.

Single Diodes Replacement Considerations

Direct substitutes include other 1N4148 variants in surface mount packages such as SMA or SOD-123, provided pinout compatibility and voltage/current ratings are met. Verify thermal dissipation capabilities when replacing with smaller packages.