1N4148TR

Single Diodes Overview

The Fairchild Semiconductor 1N4148TR is a small-signal switching diode designed for high-speed applications. It features a standard single configuration housed in the DO-35 axial leaded package, suitable for through-hole mounting. The device supports a maximum repetitive peak reverse voltage of 100 V and an average forward rectified current of 200 mA. Key electrical characteristics include a maximum forward voltage of 1 V at 10 mA, a reverse leakage current of 5 µA at 75 V, and a rapid reverse recovery time of 4 ns. The component operates within a temperature range of -65 °C to +175 °C junction temperature.

Single Diodes Feature Summary

• High-speed switching capability with a 4 ns reverse recovery time
• Standard single diode configuration for signal isolation
• Robust thermal performance supporting up to 175 °C junction temperature

Single Diodes Applications

• High-frequency signal circuits
• Digital logic circuit protection
• Microcontroller I/O port protection

Single Diodes Procurement Notes

Verify the manufacturer marking on the component body to confirm Fairchild Semiconductor origin, as multiple vendors produce this generic part number. Ensure the ordering suffix matches the specific reel quantity and tape-and-reel packaging requirements for automated assembly lines. Cross-reference the datasheet revision date to ensure compliance with current RoHS and REACH standards before finalizing procurement orders.

Single Diodes Selection Notes

Select this component when a fast-switching diode is required for low-current signal processing rather than power rectification. The DO-35 package is appropriate for through-hole designs where surface-mount space is not constrained. Consider the 100 V reverse voltage rating to ensure adequate margin against transient spikes in the target application circuit.

Single Diodes Part Context

The 1N4148 series represents a classic generation of silicon planar switching diodes introduced in the 1960s. Fairchild Semiconductor's version maintains the industry-standard pinout and electrical profile established by the original specification. This component serves as a fundamental building block in discrete semiconductor design, widely recognized for its reliability in general-purpose switching tasks across consumer and industrial electronics.

Single Diodes Replacement Considerations

The 1N914 is a confirmed direct substitute with identical electrical specifications and pinout compatibility.