1N457TR

Overview

The Fairchild Semiconductor 1N457TR is a small signal switching diode designed for general-purpose applications. It features a peak reverse voltage of 70 V and supports a maximum forward current of 200 mA. The device exhibits a low leakage current of 25 nA and a forward voltage drop of 1 V. It withstands surge currents up to 4 A and operates within a temperature range of -65 °C to +175 °C. Packaged in the DO-35 axial through-hole format, it is available in cut tape or reel configurations.

Feature Summary

• High conductance characteristics with low leakage current
• Robust thermal performance supporting operation up to 175 °C
• Standard DO-35 axial leaded package for through-hole mounting

Applications

• General purpose rectification
• Signal switching circuits
• Protection against transient voltages

Procurement Notes

Verify the manufacturer designation on the component marking, as this part number may be produced by multiple entities including ON Semiconductor following industry acquisitions. Confirm that the specific suffix matches the required packaging type, such as cut tape or reel, to ensure compatibility with automated assembly equipment. Cross-reference the datasheet revision to validate electrical parameters against the latest official documentation.

Selection Notes

Select this component when a standard silicon switching diode with high conductance is required for low-voltage applications. The DO-35 package provides a reliable through-hole solution for prototyping or legacy designs. Ensure the circuit design accounts for the 70 V peak reverse voltage limit and the 200 mA continuous forward current rating under expected operating temperatures.

Part Context

This component belongs to the 1N457 series of general-purpose silicon junction diodes. These devices are widely utilized in electronic circuits requiring efficient switching and rectification capabilities. The series is characterized by its robust construction and standardized electrical specifications suitable for broad industrial and consumer electronics applications.

Replacement Considerations

Equivalent parts include the 1N457A from various manufacturers. Verify pinout compatibility and electrical parameter alignment before substitution.