Nexperia USA Inc. PDTC144EQCZ

Overview

PDTC144EQC 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 47 kΩ input and output bias resistors (R1 = R2 = 47 kΩ), delivers 80× DC current gain at 5 mA collector current, and achieves ≤100 mV collector-emitter saturation voltage at IC = 10 mA/IB = 0.5 mA - enabling compact digital switching in space-constrained load control and IC input interface circuits.

For engineers reviewing the PDTC144EQC datasheet, PDTC144EQC pinout, PDTC144EQC application, or PDTC144EQC equivalent, this device serves as a drop-in replacement for BC847-based digital switches where built-in biasing reduces PCB footprint, eliminates discrete resistor placement, and supports AOI-compatible solder joint inspection on ultra-thin 0.48 mm profile boards.

Technical Context

This NPN RET uses an integrated dual-resistor network (R1 = R2 = 47 kΩ) to provide fixed base biasing, eliminating external resistors while maintaining predictable turn-on/off thresholds. Its 50 V V_CEO rating and 100 mA continuous output current support robust interfacing between low-voltage logic and moderate-power loads.

The DFN1412D-3 package features side-wettable flanks for automated optical inspection of solder joints and a 0.5 mm max height - critical for ultra-thin portable electronics. Thermal resistance is 278 K/W (on 70 µm FR4 PCB), enabling stable operation up to 150 °C junction temperature.

Key Specifications

Pinout & Package

DFN1412D-3 (SOT8009) is a 3-terminal, leadless surface-mount package with side-wettable flanks, measuring 1.4 mm × 1.2 mm × 0.48 mm and featuring a 0.8 mm pitch. Its low 0.5 mm max height supports ultra-thin end equipment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC124EQC, PDTC144EQC offers higher input impedance for reduced MCU I/O loading and better noise immunity; compared with BC847B, it trades raw gain for BOM simplification, AOI compatibility, and guaranteed switching thresholds - making it optimal for cost-sensitive, high-volume digital interface designs.

Availability

PDTC144EQC is available at Aetrix Electronics and suitable for LED driver interfaces, microcontroller GPIO expansion, industrial sensor signal conditioning, and USB-C port power switch control requiring stable component supply across automotive-grade ambient temperature ranges (-55 °C to 150 °C).

Supply support for PDTC144EQC 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.

PDTC144EQC belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to replace discrete BJT + resistor combinations in digital switching applications - prioritizing miniaturization, manufacturability, and design simplicity.

FAQ

What is the maximum allowable continuous collector current for PDTC144EQC?

The maximum continuous collector current is 100 mA under standard mounting conditions (FR4 PCB, single-sided, 70 µm copper). Derating applies above 25 °C ambient: power dissipation drops linearly to zero at 150 °C junction temperature, per the 450 mW P_tot rating at T_amb ≤ 25 °C.

Can PDTC144EQC be used with 1.8 V logic inputs?

Yes - its VI(on) range is 1.6–3.0 V at I_C = 2 mA, and VI(off) is 0.8–1.2 V at I_C = 100 µA. At 1.8 V, the device reliably saturates (h_FE ≥ 80 confirmed), delivering full 100 mA output with ≤100 mV V_CE(sat), provided ambient temperature remains ≤85 °C.

How does the DFN1412D-3 package support automated optical inspection?

The package features side-wettable flanks - exposed metal on the vertical edges of terminals 1 and 3 - allowing AOI systems to image solder fillets directly. This enables 100% solder joint verification without X-ray, meeting IPC-A-610 Class 2/3 requirements for industrial and medical assemblies.

Is PDTC144EQC pin-compatible with other devices in the PDTC143/114/124 series?

Yes - all PDTC143/114/124/144EQC variants share identical DFN1412D-3 (SOT8009) pinout (Pin 1 = Input, Pin 2 = GND, Pin 3 = Output) and mechanical footprint. Only internal resistor values differ (4.7 kΩ to 47 kΩ), allowing direct substitution when circuit biasing requirements align.