PDTA143ZQCZ

Overview

The PDTA143ZQC is a PNP Resistor-Equipped Transistor (RET) from Nexperia, housed in an ultra-small DFN1412D-3 (SOT8009) leadless package with side-wettable flanks. It integrates bias resistors R1 and R2 to simplify circuit design. Key electrical parameters include a collector-emitter voltage of -50 V, an output current of -100 mA, and a total power dissipation of 360 mW at 25 °C on a 35 µm copper PCB. The built-in resistors are typically 4.7 kΩ for R1 and 47 kΩ for R2, yielding a ratio of 10. The device features a minimum DC current gain of 100 at -10 mA and -5 V, with a transition frequency of 180 MHz.

Feature Summary

• Integrates built-in bias resistors to reduce component count and assembly costs
• Ultra-small DFN1412D-3 package with side-wettable flanks for improved solder joint inspection
• Low profile height of 0.5 mm suitable for space-constrained applications

Applications

• Digital switching and amplification circuits
• Controlling IC inputs
• Cost-saving alternative for BC857 series in digital applications

Procurement Notes

Verify the specific ordering code and reel quantity directly with Nexperia or authorized distributors, as packaging configurations may vary. Confirm that the DFN1412D-3 footprint matches your PCB design guidelines, particularly regarding the side-wettable flank requirements for reflow soldering. Ensure compliance with RoHS directives and check for any recent product change notices affecting availability or specifications.

Selection Notes

Select the PDTA143ZQC when a PNP transistor with a high base-to-emitter resistor ratio (R2/R1 = 10) is required. This configuration provides stronger pull-down capability compared to variants like PDTA143XQC. Consider the DFN1412D-3 package dimensions and thermal resistance values if operating near the maximum junction temperature limits. Verify that the -50 V rating meets the system's voltage requirements.

Part Context

The PDTA143ZQC belongs to the PDTA143X/123J/143Z/114Y/124XQC series, which shares the same SOT8009 package but differs in internal resistor values. It serves as the PNP complement to the PDTC143ZQC NPN device. This series replaces older discrete resistor-transistor combinations, offering a standardized solution for general-purpose switching tasks in consumer and industrial electronics.

Replacement Considerations

Direct functional replacements within the same package include other members of the PDTA143XQC series such as PDTA143XQC, PDTA123JQC, PDTA114YQC, and PDTA124XQC, provided their specific resistor ratios match the circuit requirements. For pin-compatible alternatives in different packages, consider standard PNP transistors paired with external resistors, though this increases board space.