Nexperia USA Inc. PDTA143XQBZ

Overview

PDTA143XQB from Nexperia is a 50 V, 100 mA PNP resistor-equipped transistor (RET) in a DFN1110D-3 (SOT8015) leadless package with side-wettable flanks. It integrates 4.7 kΩ input bias resistor (R1) and 10 kΩ feedback resistor (R2), delivers −100 mV V_CE(sat) at −10 mA/−0.5 mA, and operates as a digital switch for IC input control or low-side load switching in space-constrained consumer and industrial PCBs.

For engineers reviewing the PDTA143XQB datasheet, PDTA143XQB pinout, PDTA143XQB application, or PDTA143XQB equivalent, this part serves as a drop-in replacement for BC857-series transistors in digital logic interfacing, offers AOI-compatible solder joint inspection, and supports high-density routing due to its 1.1 × 1.0 × 0.48 mm footprint and 0.5 mm profile.

Technical Context

This PNP RET uses an integrated bipolar junction transistor with two on-die resistors forming a fixed base bias network-R1 connects base to input, R2 shunts base to emitter-enabling single-pin digital drive without external components. Its −50 V V_CEO and −100 mA I_O rating support robust operation in 3.3 V and 5 V logic-controlled power rails.

The device exhibits −100 mV saturation voltage at I_C = −10 mA / I_B = −0.5 mA, h_FE ≥ 50 at V_CE = −5 V / I_C = −10 mA, and VI(on) of −2.5 V to −1.5 V under active switching conditions-key parameters defining its reliable turn-on behavior in digital gate-driven configurations.

Key Specifications

Pinout & Package

DFN1110D-3 (SOT8015) is a 3-terminal, leadless, surface-mount plastic package with side-wettable flanks, measuring 1.1 mm × 1.0 mm × 0.48 mm and featuring a 0.65 mm pitch. Its low 0.5 mm height supports ultra-thin portable electronics assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC143XQB, PDTA143XQB provides complementary sink-switching functionality with identical resistor ratios and package compatibility; versus BC857B, it trades gain flexibility for BOM reduction and AOI-ready assembly-ideal for cost-sensitive, high-volume digital interface designs.

Availability

PDTA143XQB is available at Aetrix Electronics and suitable for LED indicator control, microcontroller input conditioning, relay driver interfaces, and digital load switching requiring stable component supply across industrial, consumer, and automotive-adjacent applications.

Supply support for PDTA143XQB 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 semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

The PDTA143XQB belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to simplify digital interface design by integrating biasing networks into miniature leadless packages for automated manufacturing and space-constrained applications.

FAQ

What is the maximum continuous collector current for PDTA143XQB?

The PDTA143XQB supports a continuous output current (I_O) of −100 mA at T_amb ≤ 25 °C on a standard FR4 PCB with 35 µm copper. Derating applies above 25 °C per Figure 1 in the datasheet, reaching zero at ~125 °C ambient under those conditions.

Can PDTA143XQB replace BC857 in existing designs without layout changes?

Yes-PDTA143XQB uses the same DFN1110D-3 (SOT8015) footprint as BC857 variants in matching packages, and its integrated 4.7 kΩ/10 kΩ resistor network replaces the external base resistor typically used with BC857. No PCB redesign is needed beyond removing the discrete resistor.

Does PDTA143XQB support Automatic Optical Inspection (AOI)?

Yes-the DFN1110D-3 package features side-wettable flanks, enabling reliable solder joint inspection using standard AOI systems. This eliminates manual visual checks and improves yield in high-speed SMT lines handling consumer electronics and industrial control modules.

What is the typical transition frequency (f_T) of the internal transistor?

The built-in PNP transistor has a typical transition frequency f_T of 180 MHz at V_CE = −5 V, I_C = −10 mA, and f = 100 MHz. While optimized for digital switching-not RF amplification-this bandwidth ensures clean edge response in 10 MHz logic interfaces and PWM dimming circuits.