NXP Semiconductors PDTA143TM,315

Overview

PDTA143TM from Nexperia is a PNP resistor-equipped transistor with integrated 4.7 kΩ base bias resistor (R1), open R2 configuration, −50 V V_CEO, −100 mA I_O, and SOT883 (SC-101) ultra-small surface-mount package. It functions as a single-stage digital switch in space-constrained logic interface and level-shifting circuits, commonly used in portable consumer electronics power management.

For engineers reviewing the PDTA143TM datasheet, PDTA143TM pinout, PDTA143TM application, or PDTA143TM equivalent, key selection criteria include guaranteed DC current gain (h_FE ≥ 200 at −1 mA), low V_CEsat (≤ −150 mV at −5 mA/−0.25 mA), thermal resistance (R_{th j-a} = 500 K/W), and compatibility with reflow-only soldering per SOT883 mounting conditions.

Technical Context

This device integrates a monolithic PNP bipolar junction transistor with a precision laser-trimmed 4.7 kΩ base-emitter pull-up resistor (R1) and no second resistor (R2 = open), enabling direct TTL/CMOS-compatible switching without external bias components. Its architecture eliminates base current calculation and reduces PCB footprint in high-density designs.

Designed for DC-coupled digital switching-not linear amplification-it operates in saturation/cutoff modes only, with guaranteed performance across −65 °C to +150 °C ambient range and junction temperature up to 150 °C. The SOT883 package's 1.0 × 0.6 × 0.5 mm body supports automated placement on fine-pitch boards.

Key Specifications

Pinout & Package

SOT883 (SC-101) is a leadless ultra-small plastic package measuring 1.0 × 0.6 × 0.5 mm with three solder lands. It requires reflow soldering only and is optimized for high-volume automated assembly on dense PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP digital transistor applications.

Compared with PDTC143TM and EMH11T2R, PDTA143TM offers the lowest gate drive requirement among PNP RETs in SOT883, making it optimal for weak-output MCUs-but lacks R₂ for active pull-down, limiting use in systems where input float must be avoided.

Availability

PDTA143TM is available at Aetrix Electronics and suitable for smartphone power sequencing, IoT sensor node enable control, and USB-C port configuration detection requiring stable component supply and long-term lifecycle support.

Supply support for PDTA143TM 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 high-volume discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

The PDTA143TM belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically for eliminating external bias components in digital switching applications while maintaining AEC-Q101 readiness and reflow-soldering compatibility.

FAQ

Is PDTA143TM compatible with lead-free reflow soldering processes?

Yes. The SOT883 package is qualified for lead-free reflow only, with peak temperature tolerance up to 260 °C per JEDEC J-STD-020. Hand soldering or wave soldering is not recommended due to thermal stress risks and mechanical fragility of the leadless structure.

What is the maximum allowable continuous collector current at 85 °C ambient?

At T_amb = 85 °C, derating applies: P_tot = 250 mW at 25 °C, with R_{th j-a} = 500 K/W. Junction temperature must stay ≤150 °C, allowing max P_tot ≈ 125 mW at 85 °C → I_C ≤ −70 mA (using V_CEsat ≈ −150 mV). Full −100 mA rating applies only at T_amb ≤ 25 °C.

Does PDTA143TM have built-in ESD protection?

No. The device has no specified HBM or CDM ESD rating in its datasheet. System-level ESD protection (e.g., TVS diode on collector line) is required if exposed to human handling or connector interfaces exceeding ±2 kV HBM.

Can PDTA143TM replace a standard PNP transistor like BC807 in existing designs?

Only with schematic modification: PDTA143TM integrates R₁, so external base resistor must be removed. Also verify logic polarity-its PNP action inverts signal direction versus NPN-based BC807 implementations. Pinout differs (SOT883 vs SOT23), requiring layout change.