Nexperia USA Inc. PDTA143EQCZ

Overview

PDTA143EQC from Nexperia is a 50 V, 100 mA PNP resistor-equipped transistor (RET) in a DFN1412D-3 (SOT8009) leadless package with side-wettable flanks. It integrates 4.7 kΩ input and output bias resistors, delivers −100 mA output current, exhibits −100 mV V_CE(sat) at I_C = −10 mA / I_B = −0.5 mA, and supports digital switching of logic-level control signals into microcontroller GPIOs or LED drivers.

For engineers reviewing the PDTA143EQC datasheet, PDTA143EQC pinout, PDTA143EQC application, or PDTA143EQC equivalent, this device serves as a space-optimized, AOI-compatible replacement for discrete base-resistor + PNP configurations in low-voltage digital interface circuits requiring stable gain and predictable turn-on/off thresholds.

Technical Context

This PNP RET implements an integrated emitter-grounded switch with two monolithically embedded silicon resistors: R1 (4.7 kΩ) between base and input terminal, and R2 (4.7 kΩ) between base and emitter. Its internal transistor features V_CEO = −50 V, h_FE ≥ 30 at I_C = −10 mA, and f_T = 180 MHz - enabling reliable DC switching and moderate-speed digital signal routing.

The device operates within −55 °C to +150 °C ambient range, achieves thermal resistance R_th(j-a) = 348 K/W on standard FR4 PCB, and maintains VI(on) = −2.5 V to −1.9 V and VI(off) = −1.1 V to −0.5 V - ensuring robust noise margin against TTL/CMOS logic levels in industrial control I/O stages.

Key Specifications

Pinout & Package

DFN1412D-3 (SOT8009) is a 3-terminal, ultra-small leadless plastic package measuring 1.4 × 1.2 × 0.48 mm with side-wettable flanks for automated optical inspection (AOI) of solder joints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC143EQC, PDTA143EQC enables high-side switching with simpler biasing; compared with BC857B, it reduces bill-of-materials and improves manufacturing yield by integrating resistors - making it optimal for cost-sensitive, high-volume digital interface designs.

Availability

PDTA143EQC is available at Aetrix Electronics and suitable for industrial HMIs, IoT sensor nodes, programmable logic controller (PLC) I/O modules, and consumer appliance control panels requiring stable component supply and long-term production continuity.

Supply support for PDTA143EQC 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 for automotive, industrial, and consumer markets.

The PDTA143EQC belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to replace discrete transistor + resistor combinations in digital logic interface and level-shifting applications.

FAQ

What is the maximum operating temperature for PDTA143EQC?

The PDTA143EQC has a maximum junction temperature (T_j) of 150 °C and operates across an ambient temperature range of −55 °C to +150 °C. Its thermal resistance is 348 K/W on standard FR4 PCB, so derating is required above 25 °C ambient to maintain safe junction temperatures under full 100 mA load.

Can PDTA143EQC replace BC857 in existing designs?

Yes - PDTA143EQC serves as a drop-in functional replacement for BC857-series PNP transistors in digital switching applications, provided the circuit uses emitter-grounded configuration and does not require adjustable base bias. Its integrated 4.7 kΩ resistors simplify layout but fix the input impedance and switching thresholds.

Does PDTA143EQC support automatic optical inspection (AOI)?

Yes - the DFN1412D-3 (SOT8009) package features side-wettable flanks, allowing AOI systems to reliably inspect solder joint formation on all three terminals. This capability supports zero-defect manufacturing in high-throughput SMT lines without requiring X-ray verification.

What is the typical transition frequency (f_T) of PDTA143EQC?

The typical transition frequency is 180 MHz at V_CE = −5 V, I_C = −10 mA, and f = 100 MHz. This enables clean switching of digital signals up to ~10–20 MHz, making it suitable for UART, SPI, and I²C level translation where edge fidelity matters but RF performance is not required.