FJV4102RMTF

Overview

The FJV4102RMTF is a pre-biased NPN bipolar junction transistor manufactured by Fairchild Semiconductor. It integrates internal biasing resistors within a compact SOT-23-3 surface-mount package to simplify circuit design and reduce component count. The device features a maximum collector-emitter voltage of 50V and a continuous collector current rating of 100mA. Internal resistor values are typically 10kOhms for the base input and 47kOhms for the collector-base feedback path, establishing a specific bias ratio. The transistor supports a maximum operating temperature of +150°C and offers a DC current gain (hFE) with a minimum value of 30.

Feature Summary

• Integrated dual-resistor network eliminates external biasing components
• Single NPN configuration in a low-profile SMD package
• High thermal stability supporting elevated operating temperatures

Applications

• General-purpose switching circuits requiring simplified bias networks
• Driver stages for logic-to-power interface applications
• Low-voltage signal amplification in consumer electronics

Procurement Notes

Verify the manufacturer source carefully as Fairchild Semiconductor has undergone corporate integration. Confirm that the ordering suffix corresponds to the exact electrical specifications required for your design. Ensure compliance with RoHS directives if environmental regulations apply to your specific manufacturing region or end-product requirements.

Selection Notes

Select this component when a single NPN transistor with integrated base and collector-base resistors is needed. Verify that the 50V voltage rating and 100mA current limit meet the load requirements. Compare the internal resistor values against the target circuit impedance to ensure proper biasing without additional external components.

Part Context

This part belongs to the FJV series of pre-biased transistors designed for space-constrained applications. The series consolidates discrete transistor and resistor functions into a single surface-mount device. This integration reduces board area and assembly complexity compared to using separate discrete components for equivalent biasing functionality.

Replacement Considerations

Check for equivalents from ON Semiconductor following the Fairchild acquisition. Verify pinout compatibility and internal resistor tolerance matches before substitution. Ensure the replacement maintains the same SOT-23-3 footprint and electrical ratings.