Nexperia USA Inc. PDTC143EQC-QZ

Overview

PDTC143EQC-Q from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in a DFN1412D-3 (SOT8009) leadless package with side-wettable flanks. It integrates 4.7 kΩ input and 4.7 kΩ base-emitter bias resistors, delivers 100 mV V_CE(sat) at I_C = 10 mA / I_B = 0.5 mA, and is AEC-Q101 qualified for automotive digital switching applications such as IC input control and load switching.

For engineers reviewing the PDTC143EQC-Q datasheet, PDTC143EQC-Q pinout, PDTC143EQC-Q application, or PDTC143EQC-Q equivalent, this page provides verified pin functions, thermal derating curves, on/off-state input voltage thresholds, DC current gain (h_FE ≥ 30), and AEC-Q101 qualification status - all confirmed from Nexperia's official Rev. 1 product data sheet dated 1 October 2021.

Technical Context

This RET implements an integrated NPN bipolar junction transistor with two monolithically embedded silicon resistors: R1 (4.7 kΩ) between base and input terminal, and R2 (4.7 kΩ) between base and emitter. The fixed R2/R1 ratio of 1.0 enables predictable turn-on behavior without external bias network design.

Its DFN1412D-3 package features side-wettable flanks for automated optical inspection (AOI) of solder joints, 0.5 mm max height, and thermal resistance R_th(j-a) of 348 K/W (FR4, 35 µm Cu) or 278 K/W (FR4, 70 µm Cu), supporting high-density automotive PCB layouts requiring reliable thermal performance under ambient temperatures from −55 °C to +150 °C.

Key Specifications

Pinout & Package

DFN1412D-3 (SOT8009) is a 3-terminal, leadless, ultra-small surface-mount plastic package measuring 1.4 × 1.2 × 0.48 mm with side-wettable flanks for AOI-compatible reflow soldering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC114EQC-Q, PDTC143EQC-Q offers lower input threshold and tighter resistor matching for faster turn-on in 3.3 V systems; compared with BC847B-Q, it trades design flexibility for BOM reduction and AEC-Q101-compliant integration - making it optimal for cost-sensitive, high-volume automotive digital switching.

Availability

PDTC143EQC-Q is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, consumer appliance control boards, and automotive HVAC actuator drivers requiring stable component supply and AEC-Q101 compliance.

Supply support for PDTC143EQC-Q 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 high-volume, high-reliability essential semiconductors, with leadership in logic, discretes, and MOSFETs for automotive, industrial, and mobile markets.

PDTC143EQC-Q belongs to Nexperia's AEC-Q101-qualified resistor-equipped transistor (RET) family, designed specifically to replace discrete BJT + resistor combinations in automotive digital switching applications while ensuring manufacturability, AOI compatibility, and thermal robustness.

FAQ

What is the maximum continuous collector current for PDTC143EQC-Q?

The maximum continuous collector current is 100 mA under standard FR4 PCB mounting conditions (single-sided, 35 µm copper). This rating assumes ambient temperature ≤ 25 °C; derating applies above that - e.g., ~60 mA at 85 °C ambient per the published power derating curve (Fig. 1, condition [1]). Exceeding this limit risks thermal runaway or permanent degradation.

Does PDTC143EQC-Q require an external base resistor?

No. PDTC143EQC-Q integrates both R1 (4.7 kΩ) and R2 (4.7 kΩ) internally, enabling direct connection of a logic-level signal (e.g., 3.3 V or 5 V) to Pin 1 (input) without any external base resistor. This simplifies schematic design, reduces component count, and eliminates variability from discrete resistor tolerances.

How does the side-wettable flank feature benefit manufacturing?

The side-wettable flanks on the DFN1412D-3 package allow automated optical inspection (AOI) systems to verify solder joint quality on the otherwise inaccessible solder edges beneath the device. This improves first-pass yield in high-volume automotive PCB assembly and reduces reliance on post-reflow X-ray inspection, lowering production cost and cycle time.

Is PDTC143EQC-Q compatible with lead-free reflow profiles?

Yes. PDTC143EQC-Q is qualified for standard lead-free reflow soldering per JEDEC J-STD-020, with peak temperature tolerance up to 260 °C. The recommended footprint (Fig. 31) and stencil thickness (0.1 mm) are optimized for uniform solder paste deposition and void-free joints in DFN1412D-3 packages using typical Type 3 or Type 4 solder paste.