PDTA143XU,115

Overview

The PDTA143XU,115 is a PNP Resistor-Equipped Transistor (RET) manufactured by Nexperia USA Inc. in the SOT323 surface-mount package. It integrates bias resistors R1 and R2 with a single PNP transistor to simplify circuit design. Key electrical parameters include a collector-emitter voltage (VCEO) of -50 V, an output current (IO) of -100 mA, and a total power dissipation (Ptot) of 200 mW at 25 °C. The typical input bias resistor R1 is 4.7 kΩ, with a bias resistor ratio (R2/R1) of 2.1. The device features a DC current gain (hFE) of 50 minimum at IC = -10 mA and VCE = -5 V, and a transition frequency (fT) of 180 MHz.

Feature Summary

• Built-in bias resistors eliminate external components, reducing component count and pick-and-place costs.
• Simplifies circuit design for digital applications through integrated resistor network.
• Qualified to AEC-Q101 automotive standards for reliability in demanding environments.

Applications

• Digital applications in automotive and industrial segments
• Control of IC inputs
• Switching loads

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to ensure correct packaging and marking codes. Confirm that the SOT323 package dimensions align with the target PCB footprint requirements. Check for any recent product change notices regarding material composition or manufacturing site updates before finalizing procurement specifications.

Selection Notes

Select this component when a compact PNP switching solution with integrated base and emitter resistors is required. Ensure the application voltage does not exceed the -50 V collector-emitter rating. Verify that the thermal resistance characteristics fit within the system's heat dissipation constraints, particularly considering the 200 mW power dissipation limit in free air.

Part Context

This part belongs to the PDTA143X series of PNP resistor-equipped transistors. The 'XU' designation specifically identifies the SOT323 (SC-70) plastic surface-mounted package variant. Other series members include PDTA143XT (SOT23), PDTA143XE (SOT416), and PDTA143XM (SOT883). All variants share identical electrical characteristics but differ in physical package dimensions and thermal performance.

Replacement Considerations

Publicly confirmed substitutes with the same pinout and package include DTA143XU3 and DTA143XU3HZG from Nexperia. These alternatives maintain the SOT323 form factor and PNP polarity. Verify compatibility with existing board layouts and ensure equivalent electrical ratings match the original design requirements.

FAQ

What are the values of the built-in resistors?

The typical input bias resistor R1 is 4.7 kΩ, and the bias resistor ratio R2/R1 is 2.1.

Is this component suitable for automotive applications?

Yes, the PDTA143X series is qualified in accordance with the Automotive Electronics Council (AEC) standard Q101.

What is the maximum collector-emitter voltage?

The maximum collector-emitter voltage (VCEO) is -50 V.