RN2971FE(TE85L,F)

Overview

The RN2971FE(TE85L,F) is a pre-biased NPN transistor manufactured by Toshiba Semiconductor and Storage. It integrates an NPN bipolar junction transistor with two built-in bias resistors in a compact SOT-323 surface-mount package. The device features a collector-emitter voltage rating of 50V and a continuous collector current capacity of 100mA. Internal resistor values are typically configured as R1 at 10kΩ and R2 at 10kΩ, providing stable base drive characteristics. This integration simplifies circuit design by reducing component count and board space requirements while maintaining reliable switching performance for low-power digital applications.

Feature Summary

• Integrated dual bias resistors eliminate external components
• Compact SOT-323 surface-mount packaging for space efficiency
• High reliability through standardized internal resistor matching

Applications

• General-purpose switching circuits in consumer electronics
• Driver stages for small-signal logic interfaces
• Level shifting applications in portable devices

Procurement Notes

Verify the complete part number including the suffix TE85L,F to ensure correct tape-and-reel packaging configuration. Confirm that the specified resistor values match the design requirements before procurement. Check manufacturer documentation for any recent revisions to electrical specifications or recommended soldering profiles to ensure compatibility with assembly processes.

Selection Notes

Select this component when space constraints require integrated biasing solutions. Ensure the required gain and switching speed meet application demands within the 50V and 100mA limits. Compare thermal dissipation capabilities against expected power loads in the final enclosure environment.

Part Context

This part belongs to Toshiba's RN series of pre-biased transistors designed for replacing discrete resistor-transistor combinations. The FE designation indicates specific electrical characteristics and pinout configurations distinct from other variants in the family. The TE85L suffix denotes the specific reel packaging format used for automated surface-mount assembly lines.

Replacement Considerations

Direct substitutes include other manufacturers' SOT-323 pre-biased NPN transistors with similar 50V ratings and 100mA current capacities. Verify pinout compatibility and internal resistor tolerances before substitution. Consider thermal resistance differences if operating near maximum ratings.