FJX4006RTF

Overview

The FJX4006RTF is a PNP silicon epitaxial digital transistor manufactured by onsemi, formerly Fairchild Semiconductor. It integrates a single NPN transistor with built-in bias resistors in a compact SOT-323-3 surface-mount package. Key electrical specifications include a collector-emitter voltage (VCEO) of 50 V and a continuous collector current of -100 mA. The device features a typical input resistance of 22 kOhms and a minimum DC current gain (hFE) of 56. Power dissipation is rated at 200 mW, with an operating temperature range spanning from -55°C to +150°C.

Feature Summary

• Integrates a PNP transistor with internal biasing resistors to simplify circuit design.

Applications

• General-purpose switching applications requiring integrated biasing.

Procurement Notes

Verify the current lifecycle status of the FJX4006RTF, as legacy Fairchild components may be discontinued or subject to supply constraints. Confirm RoHS compliance and specific ordering suffixes directly with authorized distributors or onsemi, as availability varies by region. Ensure that any substitute components meet the original electrical requirements for voltage, current, and thermal performance before implementation.

Selection Notes

Select this component when a compact PNP digital transistor solution is required for low-power switching tasks. The SOT-323-3 package suits space-constrained designs. Verify that the 50 V rating and 100 mA current limit align with the load requirements. Consider the 22 kOhm input resistance for base drive calculations to ensure proper saturation under expected operating conditions.

Part Context

This part belongs to the FJX series of digital transistors originally developed by Fairchild Semiconductor. Following the acquisition of Fairchild by onsemi, these products are now managed under the onsemi portfolio. The FJX series provides integrated resistor networks to reduce board space and assembly costs compared to discrete resistor-transistor combinations.

Replacement Considerations

Publicly confirmed direct substitute part numbers for the FJX4006RTF were not identified in the available documentation. Engineers should consult onsemi's cross-reference tools or distributor databases for equivalent PNP digital transistors in the SOT-323-3 package with matching 50 V and 100 mA ratings.