FJY4010R

Overview

The FJY4010R is a PNP epitaxial silicon transistor manufactured by Fairchild Semiconductor. It is housed in a small outline SOT-23 package with three terminals. The device features a built-in bias resistor, with a specified ratio of 21.36. Key electrical ratings include a maximum collector current (IC) of 0.1 A and a collector-emitter breakdown voltage (VCEO) of 50 V. The minimum DC current gain (hFE) is rated at 68. The component supports a maximum power dissipation of 0.2 W and operates at junction temperatures up to 150 °C.

Feature Summary

• Integrated bias resistor network for simplified circuit design
• PNP epitaxial silicon construction for reliable switching performance
• Compact SOT-23 surface-mount packaging

Applications

• General-purpose switching applications
• Driver circuits requiring integrated biasing
• Low-power signal processing stages

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Fairchild Semiconductor or authorized distributors. Confirm that the SOT-23 package variant matches the required PCB footprint and thermal management specifications for the intended application environment.

Selection Notes

Select this component when a PNP transistor with an integrated bias resistor is required to reduce external component count. Ensure the 50 V collector-emitter voltage rating exceeds the maximum circuit voltage. Verify that the 0.1 A current limit and 0.2 W power dissipation are sufficient for the load requirements.

Part Context

This part belongs to the family of discrete bipolar junction transistors produced by Fairchild Semiconductor. It utilizes epitaxial silicon technology to achieve stable performance in small-signal applications. The inclusion of a built-in resistor distinguishes it from standard discrete transistors, offering a compact solution for biasing needs.

Replacement Considerations

Consult official substitution guides for equivalent PNP transistors with integrated resistors. Verify pinout compatibility and electrical parameter alignment before replacing the original component.