FJY3003R

Overview

The FJY3003R is an NPN epitaxial silicon transistor manufactured by Fairchild Semiconductor, designed for switching applications with integrated bias resistors. It features a maximum collector current of 100 mA and a collector-emitter voltage rating of 50 V. The device incorporates built-in bias resistors with a ratio of 1:1, specifically R1 = 22 kΩ and R2 = 22 kΩ, to simplify circuit design. Packaged in the TO-92 form factor, it offers a minimum DC current gain (hFE) of 56 under standard test conditions.

Feature Summary

• Integrated bias resistor network simplifies switching circuit design
• High output current capability suitable for driver applications
• Epitaxial silicon construction ensures stable performance

Applications

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

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer verification. Confirm RoHS compliance status and specific package markings match official datasheet specifications. Request batch traceability documentation to ensure adherence to quality standards during procurement processes.

Selection Notes

Select this component when space optimization and reduced bill-of-materials are priorities due to the integrated resistor configuration. Ensure the 50 V collector-emitter voltage rating exceeds the maximum operating voltage in the target application. Verify that the 100 mA current capacity aligns with the load requirements of the intended switching or driving function.

Part Context

This part belongs to the FJY series of bias resistor-built-in transistors from Fairchild Semiconductor. These devices are engineered to replace discrete transistor and resistor combinations, thereby reducing PCB footprint and assembly complexity. The series typically includes complementary PNP variants for complete interface solutions.

Replacement Considerations

The FJN3303RBU serves as a confirmed substitute within the same product family, offering identical electrical characteristics and pinout compatibility.