2STF2340

Single Bipolar Transistors Overview

The 2STF2340 is a low voltage fast-switching PNP power transistor manufactured using PB-HDC technology. It features a collector-emitter voltage of -40 V and a continuous collector current of -3 A. The device exhibits very low saturation voltage, with VCE(sat) typically at -250 mV under specific test conditions. Key electrical parameters include a DC current gain (hFE) ranging from 100 to 450, a transition frequency (ft) of 100 MHz, and resistive load switching times of 80 ns for turn-on and 450 ns for turn-off.

Single Bipolar Transistors Feature Summary

• Very low collector-emitter saturation voltage
• High current gain characteristic
• Fast switching speed

Single Bipolar Transistors Applications

• LED drivers
• Motherboard & hard disk drive circuits
• Mobile equipment power management
• DC-DC converters

Single Bipolar Transistors Procurement Notes

Verify the package type and marking code upon receipt. The 2STF2340 corresponds to the SOT-89 package with '2340' marking. Confirm compliance with ECOPACK environmental specifications if required by the design. Ensure the component matches the datasheet revision and electrical characteristics before integration into the final assembly.

Single Bipolar Transistors Selection Notes

Select this component for applications requiring high current gain and fast switching in low voltage environments. The PB-HDC technology ensures superior performance compared to standard bipolar transistors. Consider the thermal resistance and total dissipation limits when designing the heat dissipation strategy for the target PCB layout.

Single Bipolar Transistors Part Context

This device belongs to STMicroelectronics' low voltage fast-switching PNP power transistor family. It is designed to complement N-channel counterparts in various power conversion topologies. The PB-HDC technology differentiates it from older generation bipolar devices by offering improved current density and switching efficiency.

Single Bipolar Transistors Replacement Considerations

The complementary PNP transistor for this series is the 2STF1340. Verify pinout compatibility and electrical ratings against existing designs before substitution. Check for any updates in the manufacturer's product longevity program.