2N4401TFR

Single Bipolar Transistors Overview

The onsemi 2N4401TFR is a general-purpose NPN epitaxial silicon bipolar junction transistor (BJT) designed for low-voltage, high-speed switching and amplification applications. It operates with a maximum collector-emitter voltage of 40V and a continuous collector current of 600mA. The device features a transition frequency of 250MHz and a power dissipation rating of 625mW at 25°C ambient temperature. It is housed in a lead-free TO-92 three-pin through-hole package suitable for automated assembly.

Single Bipolar Transistors Feature Summary

• High-speed switching capability supported by a 250MHz transition frequency
• General-purpose amplification performance with standardized DC current gain ranges
• Robust thermal management within a compact plastic encapsulated body

Single Bipolar Transistors Applications

• General-purpose signal amplification circuits
• Low-frequency switching applications
• Driver stages for relays and indicator loads

Single Bipolar Transistors Procurement Notes

Verify the specific suffix TFR against the manufacturer datasheet to confirm it denotes the tape-and-reel packaging format rather than cut-tape or bulk variants. Ensure the ordering quantity aligns with reel specifications if full reels are required. Confirm RoHS compliance status directly from the official documentation prior to procurement.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN configuration is required for low-power switching tasks. Compare the 40V breakdown voltage and 600mA current limits against circuit requirements. Consider the TO-92 package constraints for thermal dissipation and board space availability relative to alternative surface-mount options.

Single Bipolar Transistors Part Context

This part belongs to the widely adopted 2N4401 family of small-signal transistors. It serves as the NPN counterpart to the PNP 2N4403 device. The series is characterized by its ubiquity in educational kits and industrial control boards due to its reliable performance and standardized pinout across multiple manufacturers.

Single Bipolar Transistors Replacement Considerations

Direct functional substitutes include the 2N4401BU and 2N4401TAR from onsemi, which share identical electrical characteristics but may differ in packaging type such as bulk or ammo pack.