1N4148 TR

Single Diodes Overview

The Central Semiconductor Corp 1N4148 TR is a high-speed silicon switching diode housed in a DO-35 hermetically sealed glass case. It serves as a drop-in replacement for the 1N914. Key electrical parameters include a peak repetitive reverse voltage of 100 V and a peak working reverse voltage of 75 V. The device supports an average forward current of 150 mA and a DC forward current of 200 mA, with a power dissipation rating of 500 mW. Electrical characteristics specify a maximum reverse leakage current of 25 nA at 20 V, a typical junction capacitance of 4.0 pF, and a reverse recovery time of 4.0 ns.

Single Diodes Feature Summary

• High-speed switching capability suitable for rapid signal processing applications
• Hermetically sealed glass construction ensuring environmental stability
• Direct functional compatibility as a drop-in replacement for the 1N914 diode

Single Diodes Applications

• General purpose high-speed switching circuits
• Signal rectification and protection
• Logic level shifting and isolation

Single Diodes Procurement Notes

Verify component status carefully before ordering. Official documentation indicates that the 1N4148 TR part number has been transitioned to End of Life (EOL) status by Central Semiconductor Corp. No direct replacement part numbers are currently listed for this specific package configuration. Contact engineering support for potential alternate sourcing or equivalent surface mount alternatives if availability is required.

Single Diodes Selection Notes

Select this component only if legacy through-hole DO-35 form factor requirements are mandatory. Note that the standard version is discontinued; verify if alternative plating options such as Tin/Lead or PbFree suffixes remain available from other distributors. Consider surface mount equivalents like the SOD-123 variants if board space allows, as these may still be in active production.

Single Diodes Part Context

This component belongs to the standard 1N4148 family of small-signal switching diodes widely used in electronics. While the general 1N4148 specification remains common across manufacturers, Central Semiconductor specifically lists the 1N4148 TR variant as discontinued. This status reflects a shift toward surface mount packaging solutions for this device class.

Single Diodes Replacement Considerations

Official documentation lists no direct replacement part numbers for the 1N4148 TR. The manufacturer suggests using equivalent devices in surface mount packages instead. Users must identify compatible SMD alternatives independently or contact sales representatives for assistance.