FJX4002RTF

Overview

The FJX4002RTF is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Fairchild Semiconductor. It features an integrated bias resistor network with R1 and R2 both specified at 10kΩ, eliminating external components. The device supports a maximum collector current of 100mA and a collector-emitter breakdown voltage of 50V. Maximum power dissipation is rated at 200mW. It operates in the SOT-323 surface-mount package.

Feature Summary

• Pre-biased design with built-in bias resistors
• Single PNP configuration
• Surface-mount packaging

Applications

• Switching circuits
• Inverter applications
• Interface circuits
• Driver circuits

Procurement Notes

Verify the manufacturer origin, as ON Semiconductor acquired Fairchild's semiconductor business. Confirm the specific suffix 'RTF' matches the required tape-and-reel packaging and SOT-323 form factor. Ensure the component meets RoHS compliance standards if required for your assembly process. Cross-reference datasheets from authorized distributors to confirm current availability and lot traceability.

Selection Notes

Select this component when a compact PNP switching solution with integrated base resistance is required. The fixed 10kΩ internal resistors simplify circuit design by reducing part count. Consider the 50V rating and 100mA current limit for appropriate load handling. The SOT-323 package is suitable for space-constrained PCB layouts requiring surface-mount technology.

Part Context

This component belongs to the FJX series of pre-biased transistors, which integrate bias resistors directly onto the die or within the package. These devices are designed to replace discrete BJT configurations, offering simplified schematics and reduced board space. The series includes various NPN and PNP options with different resistor ratios and voltage ratings.

Replacement Considerations

Equivalent parts include other pre-biased PNP transistors with similar 50V ratings and 100mA current capabilities in SOT-323 packages. Verify that substitute components maintain the same internal resistor values (R1=10kΩ, R2=10kΩ) to ensure circuit compatibility without redesign.