1N457TR

Overview

The onsemi 1N457TR is a small signal switching diode housed in a DO-35 axial lead package. It features a maximum repetitive reverse voltage of 70 V and an average rectified forward current rating of 200 mA. The device supports a non-repetitive peak forward surge current of up to 4 A with a 1.0 s pulse width. Electrical characteristics include a forward voltage of 1.0 V at 100 mA and a reverse leakage current of 25 nA at 60 V. Total capacitance is limited to 8.0 pF at 1.0 MHz. Operating junction temperature reaches 175 °C, with storage capabilities extending to +200 °C.

Feature Summary

• High conductance design optimized for low leakage performance
• Hermetically sealed glass construction ensuring environmental stability
• Capable of handling significant transient surge currents

Applications

• General purpose switching circuits
• Signal rectification applications
• Protection against transient voltage spikes

Procurement Notes

Verify the specific ordering suffix 'TR' confirms the tape and reel packaging format containing 10,000 units per reel. Confirm compliance with RoHS directives and Pb-Free status as indicated in the manufacturer's documentation. Ensure the DO-35 package dimensions align with the target PCB footprint requirements before finalizing procurement specifications.

Selection Notes

Select this component when a high-conductance silicon diode with low leakage is required for general-purpose switching tasks. The DO-35 package provides a robust mechanical solution for through-hole mounting. Evaluate thermal resistance and power dissipation limits to ensure adequate heat management within the intended operating environment.

Part Context

This part belongs to the 1N457 series of small signal diodes manufactured by onsemi. It serves as a standard replacement for legacy components requiring similar electrical characteristics in axial lead configurations. The series is widely utilized across various electronic systems for basic rectification and signal processing functions.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Verify that any alternative maintains identical pinout compatibility and meets or exceeds the original voltage and current ratings.

FAQ

What is the total capacitance of the 1N457TR?

The total capacitance is specified as a maximum of 8.0 pF at a frequency of 1.0 MHz.

Does the 1N457TR support high-temperature operation?

Yes, the device supports an operating junction temperature up to 175 °C and can be stored at temperatures reaching +200 °C.