PDTB143XUF

Overview

The PDTB143XUF is a PNP Resistor-Equipped Transistor (RET) from the PDTB1xxxU series, housed in an SOT323 (SC-70) surface-mounted package. It integrates a PNP transistor with built-in bias resistors: R1 (input) is 4.7 kΩ and R2 (base-emitter) is 10 kΩ, both with ±10% tolerance. The device supports a maximum collector current of -500 mA and a collector-emitter voltage of -50 V. Key electrical characteristics include a DC current gain (hFE) of at least 70 at -50 mA and -5 V, a saturation voltage of -100 mV max at -50 mA/-2.5 mA, and a transition frequency of 140 MHz typical. It operates within a junction temperature range up to 175 °C.

Feature Summary

• Integrates a PNP transistor with two built-in bias resistors to simplify circuit design and reduce component count.
• Qualified for automotive applications according to AEC-Q101 standards.
• Supports high-temperature operation with a maximum junction temperature of 175 °C.

Applications

• IC inputs control
• Switching loads
• General purpose switching and amplification

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official database to confirm the exact resistor values and package variant. Ensure the procurement channel provides traceability documentation required for AEC-Q101 qualified components. Confirm that the delivered parts match the specified SOT323 package dimensions and marking codes listed in the product data sheet.

Selection Notes

Select this component when a compact PNP solution with integrated base biasing is required for digital logic interfacing or load switching. The 4.7 kΩ input resistor makes it suitable for direct connection to standard logic outputs. Consider the 175 °C thermal rating for high-temperature environments and verify that the -500 mA output current capability meets the load requirements of the application.

Part Context

The PDTB143XUF belongs to the PDTB1xxxU series of PNP resistor-equipped transistors manufactured by Nexperia. This family utilizes the SOT323 (SC-70) plastic surface-mounted package to provide a small footprint for high-density designs. The 'X' designation in the part number specifically indicates the 4.7 kΩ input resistor and 10 kΩ base-emitter resistor configuration within this series.

Replacement Considerations

The datasheet identifies the NPN complement as the PDTD143XU series. For direct pin-compatible replacement in existing designs requiring an NPN configuration, the PDTD143XU should be evaluated. Verify that the complementary device meets the same current, voltage, and thermal specifications required by the circuit.