FJY4004R

Overview

The FJY4004R is a single pre-biased bipolar junction transistor (BJT) manufactured by Fairchild Semiconductor. It features PNP polarity and utilizes the SOT-523F surface-mount package. Key electrical specifications include a collector-emitter breakdown voltage of 50 V, a maximum collector current of 100 mA, and a transition frequency of 200 MHz. The device supports a maximum power dissipation of 200 mW with a collector cutoff current of 100 nA.

Feature Summary

• Integrated pre-biasing for simplified circuit design
• Single PNP bipolar junction transistor configuration
• Surface-mount SOT-523F packaging

Applications

• Switching applications in consumer electronics
• Signal amplification in portable devices
• General-purpose discrete semiconductor circuits

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as this part may be discontinued. Ensure storage conditions meet semiconductor handling standards to prevent damage prior to assembly.

Selection Notes

Select this component for designs requiring a compact PNP pre-biased transistor with 50 V breakdown capability. Consider the SOT-523F footprint constraints and 200 MHz frequency response when evaluating suitability for high-speed switching or amplification tasks within the specified power limits.

Part Context

This component belongs to the FJY series of pre-biased transistors from Fairchild Semiconductor. It serves as a discrete solution for integrating biasing networks directly onto the silicon die, reducing external component count compared to standard BJTs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.