NXP Semiconductors PDTA144WMB,315

Overview

PDTA144WMB from Nexperia is a PNP resistor-equipped transistor (RET) in a DFN1006B-3 (SOT883B) package, designed for digital switching in space-constrained applications. It integrates R1 = 47 kΩ and R2 = 22 kΩ bias resistors, supports −100 mA output current, features −50 V V_CEO, and is AEC-Q101 qualified for automotive use - deployed in mobile peripheral drivers and IC input control circuits.

For engineers reviewing the PDTA144WMB datasheet, PDTA144WMB pinout, PDTA144WMB application, or PDTA144WMB equivalent, key selection criteria include built-in resistor ratio (R2/R1 = 0.47), ultra-low profile (0.37 mm height), thermal resistance (500 K/W), and guaranteed −1.7 V to −1.2 V VI(off) threshold under standard conditions.

Technical Context

This PNP RET operates as a single-stage digital switch with integrated base bias network, eliminating external resistors. Its R1–R2 configuration enables direct logic-level drive from 3.3 V or 5 V microcontrollers without level-shifting or discrete biasing components.

The device delivers stable DC current gain (h_FE ≥ 60 at −5 mA I_C) and low saturation voltage (V_CEsat ≤ −150 mV at −10 mA I_C, −0.5 mA I_B), ensuring efficient on-state conduction while maintaining fast turn-off via controlled base discharge through R2.

Key Specifications

Pinout & Package

DFN1006B-3 (SOT883B) is a leadless, ultra-small surface-mount plastic package measuring 1.0 × 0.6 × 0.37 mm with three solderable terminals and no exposed pad. Its low-profile construction enables high-density PCB layouts in wearables and compact IoT modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.

Compared with PDTC144WMB and EMH11T2R, PDTA144WMB uniquely combines AEC-Q101 qualification, 0.37 mm height, and 500 K/W thermal resistance in the smallest available footprint - making it optimal for automotive and mobile applications demanding miniaturization and reliability.

Availability

PDTA144WMB is available at Aetrix Electronics and suitable for automotive body control modules, mobile peripheral drivers, and industrial sensor interface circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PDTA144WMB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

PDTA144WMB belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to reduce component count and simplify digital interface design in space- and reliability-critical applications.

FAQ

Is PDTA144WMB suitable for 1.8 V logic-level drive?

No - its VI(on) range is −4 V to −2.7 V, requiring minimum −2.7 V input to ensure reliable turn-on. Driving from 1.8 V CMOS outputs (which swing to only ~1.8 V) results in insufficient base-emitter forward bias. Use with 3.3 V or 5 V logic families only.

Can PDTA144WMB replace a standard PNP BJT like BC807 in existing designs?

Yes, with layout modification: connect MCU GPIO to Pin 1 (input), load between V_CC and Pin 3 (output), and Pin 2 to GND. No external resistors needed. Verify V_CEsat and switching speed meet timing requirements, as RET architecture reduces storage time versus discrete BJTs.

What is the maximum allowable pulsed current for PDTA144WMB?

The peak collector current is rated at −100 mA for pulses ≤1 ms (ICM). This applies under single-pulse conditions with duty cycle ≤1%. For repetitive pulses, derate based on thermal limits: at Tamb = 75 °C, maximum continuous current drops to ~60 mA per the power derating curve in the datasheet.

Does PDTA144WMB require a heatsink in standard FR4 PCB applications?

No - its 250 mW total power dissipation rating at 25 °C ambient and 500 K/W junction-to-ambient thermal resistance allow full −100 mA operation without heatsinking on standard single-sided FR4 PCBs with tin-plated copper and standard footprint, provided ambient stays below 75 °C.