FJY3005R

Overview

The FJY3005R is a single NPN pre-biased bipolar junction transistor manufactured by Fairchild Semiconductor. It features a collector-emitter voltage (VCEO) of 50 V and a continuous collector current rating of 100 mA. The device integrates internal biasing resistors, with a typical input resistance of 4.7 kOhms and a resistor ratio of 0.47. Packaged in a surface-mount SOT-523F case, it supports peak DC collector currents up to 100 mA and operates at frequencies up to 250 MHz. The component has a maximum operating temperature of +150°C and a power dissipation rating of 200 mW.

Feature Summary

• Integrates NPN epitaxial silicon transistor with built-in biasing network for simplified circuit design
• Optimized for high-frequency operation with a transition frequency of 250 MHz
• Compact surface-mount packaging suitable for space-constrained applications

Applications

• High-speed switching circuits
• General-purpose signal amplification
• Digital logic interface drivers

Procurement Notes

Verify the specific manufacturer source, as Fairchild Semiconductor operations have been transferred to ON Semiconductor. Confirm that the part number corresponds to the active or obsolete status within the current supply chain. Ensure the package type matches the required SOT-523F footprint and check for any RoHS compliance updates if required by the target application standards.

Selection Notes

Select this component when a compact NPN solution with integrated base biasing is required for high-speed switching. The 50 V rating and 100 mA current capacity suit low-power digital interfaces. Consider the 250 MHz frequency response for applications requiring fast rise and fall times. Verify thermal management requirements given the 200 mW power dissipation limit in the small SOT-523F package.

Part Context

The FJY3005R belongs to the FJY series of pre-biased bipolar transistors designed for surface-mount applications. These devices combine a single NPN transistor with two resistors to reduce board space and assembly costs. The series is characterized by high reliability and consistent electrical performance, making it suitable for consumer electronics and industrial control systems where space efficiency is critical.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official distributor databases for cross-reference data.