PDTC143XS,126

Overview

The PDTC143XS,126 is an NPN Resistor-Equipped Transistor (RET) from the PDTC143X series, manufactured by Nexperia. It integrates a single NPN transistor with built-in bias resistors R1 (4.7 kΩ) and R2 (10 kΩ). The device supports a collector-emitter voltage of 50 V and an output current capability of 100 mA. Key electrical characteristics include a DC current gain (hFE) of 50 at IC=10 mA, a transition frequency (fT) of 230 MHz, and a collector-emitter saturation voltage of 100 mV at IC=10 mA. The component is AEC-Q101 qualified for automotive applications.

Feature Summary

• Integrates NPN transistor with fixed bias resistors to reduce component count
• AEC-Q101 qualified for automotive reliability
• Simplifies circuit design through pre-configured resistor ratios
• Available in multiple surface-mounted device packages

Applications

• Digital logic applications in automotive segments
• Industrial digital control systems
• IC input control circuits
• Switching loads in embedded designs

Procurement Notes

Verify the specific package variant required, as the PDTC143X series includes SOT23, SOT323, SOT416, and SOT883 options. Confirm that the ordering suffix corresponds to the desired physical footprint and marking code. Ensure compliance with the manufacturer's reflow soldering recommendations for proper assembly.

Selection Notes

Select this RET when space constraints or bill-of-materials reduction are priorities compared to discrete transistor-resistor combinations. Verify that the integrated resistor values align with the target logic levels and drive requirements. Consider the thermal resistance limits based on the chosen package type and PCB copper area for adequate heat dissipation.

Part Context

This component belongs to the PDTC143X family of NPN resistor-equipped transistors. The business unit producing these standard products was formerly part of NXP Semiconductors but operates under the Nexperia brand since February 2017. The datasheet retains historical NXP references while indicating the current manufacturer identity.

Replacement Considerations

The datasheet identifies the PDTA143X series as the PNP complement. Designers should verify pinout compatibility if substituting with other RET families or discrete components, ensuring resistor tolerances and transistor gains meet the original circuit specifications.