PDTA144EK,115

Overview

The PDTA144EK,115 is a PNP resistor-equipped transistor from the PDTA144E series manufactured by NXP Semiconductors. It integrates two bias resistors within a single SOT346 (SC-59) package to simplify circuit design and reduce component count. The device features an R1 input resistor of 47 kΩ and an R2 base-emitter resistor of 47 kΩ. Key electrical parameters include a collector-emitter voltage (VCEO) of -50 V, a DC output current (IO) of -100 mA, and a total power dissipation of 250 mW at 25 °C ambient temperature. The junction temperature maximum is rated at 150 °C.

Feature Summary

• Integrates built-in bias resistors for simplified circuit design
• Reduces overall component count in switching applications
• Minimizes pick and place costs during manufacturing

Applications

• General purpose switching and amplification
• Inverter and interface circuits
• Circuit driver

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official product data sheet to confirm the exact package type and marking code. Ensure that the selected variant matches the required thermal resistance and lead configuration for the intended PCB layout. Cross-reference the datasheet revision date to guarantee compliance with current absolute maximum ratings and electrical characteristics before finalizing procurement specifications.

Selection Notes

Select this component when a compact PNP solution with integrated biasing is required for low-power switching or amplification tasks. The SOT346 package offers a surface-mount footprint suitable for space-constrained designs. Evaluate the thermal performance based on the specified junction-to-ambient resistance and ensure the operating conditions remain within the defined limits for collector current and voltage to maintain reliability.

Part Context

This part belongs to the PDTA144E series of PNP resistor-equipped transistors. The series includes multiple package options such as SOT23, SOT323, and TO-92, all sharing similar internal resistor configurations but varying in physical dimensions and thermal characteristics. The PDTA144EK specifically utilizes the SOT346 outline, providing a standardized surface-mount option within this broader family of discrete semiconductor devices designed for general-purpose electronic applications.

Replacement Considerations

Direct substitutes within the same series include PDTA144ET (SOT23) and PDTA144EU (SOT323), provided the PCB footprint can be adapted. Verify pinout compatibility, as pin assignments differ across packages like SOT416 and SOT883. Ensure any replacement maintains the 47 kΩ / 47 kΩ resistor ratio and meets the -50 V / -100 mA electrical requirements.