Nexperia USA Inc. NHDTA143ZUX

Overview

NHDTA143ZUX from Nexperia is a PNP resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching and IC input control. It features 80 V collector-emitter breakdown voltage, −100 mA output current capability, built-in bias resistors (R1 = 4.7 kΩ, R2 = 47 kΩ), and AEC-Q101 qualification for automotive-grade reliability in load-switching applications.

For engineers reviewing the NHDTA143ZUX datasheet, NHDTA143ZUX pinout, NHDTA143ZUX application, or NHDTA143ZUX equivalent, this part serves as a space- and BOM-optimized replacement for discrete base-resistor transistor configurations in low-power digital logic interfaces, microcontroller I/O drivers, and automotive body electronics.

Technical Context

This PNP RET integrates two precision on-die resistors-R1 (4.7 kΩ) connected between base and input, and R2 (47 kΩ) between base and emitter-to enable single-pin digital drive without external bias components. Its internal transistor delivers DC current gain (h_FE) ≥100 at −10 mA / −5 V and maintains stable saturation performance (V_CEsat ≤ −100 mV) under IC/IB = 20 conditions.

The device operates across −55 °C to +150 °C ambient range, supports 235 mW power dissipation on standard FR4 PCBs, and exhibits low collector capacitance (3 pF at V_CB = −10 V), ensuring fast switching in digital signal paths with minimal capacitive loading.

Key Specifications

Pinout & Package

SOT323 (SC-70) plastic surface-mounted package: ultra-compact 3-lead footprint (2.2 × 1.35 mm), optimized for high-density PCB layouts and reflow/wave soldering per IPC-7351B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NHDTC143ZU, NHDTA143ZUX enables high-side switching with non-inverted logic; compared with BC856B,115, it reduces bill-of-materials by two resistors and improves production repeatability through monolithic bias integration.

Availability

NHDTA143ZUX is available at Aetrix Electronics and suitable for automotive interior lighting, microcontroller I/O expansion, industrial sensor interface, and consumer appliance control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NHDTA143ZUX 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 and logic devices for automotive, industrial, and consumer markets.

NHDTA143ZUX belongs to Nexperia's AEC-Q101-qualified resistor-equipped transistor (RET) product line, engineered specifically to replace discrete transistor + resistor combinations in cost-sensitive, space-constrained digital switching applications.

FAQ

What is the maximum continuous collector current for NHDTA143ZUX?

The absolute maximum continuous collector current is −100 mA at T_amb ≤ 25 °C on a standard FR4 PCB with single-sided copper. Derating applies above 25 °C per Fig. 1: at 100 °C ambient, maximum allowable current drops to approximately −65 mA to maintain junction temperature ≤ 150 °C.

Can NHDTA143ZUX be used in high-frequency switching applications?

Yes - its built-in transistor has a typical transition frequency (f_T) of 150 MHz at V_CE = −5 V and I_C = −10 mA, and collector capacitance is only 3 pF at V_CB = −10 V. These parameters support clean switching up to ~10–20 MHz in digital logic interfaces, though propagation delay is not characterized in the datasheet.

How does the built-in resistor network affect logic-level compatibility?

The R1 = 4.7 kΩ / R2 = 47 kΩ network sets V_I(on) ≈ −0.95 V and V_I(off) ≈ −625 mV at I_C = −10 mA, making NHDTA143ZUX compatible with standard 3.3 V and 5 V CMOS/TTL outputs. A logic HIGH (> −0.5 V) turns the device OFF; a logic LOW (< −0.8 V) turns it ON.

Is NHDTA143ZUX pin-compatible with other SOT323 PNP transistors?

Yes - it uses standard SOT323 (SC-70) pinout: Pin 1 = input (base), Pin 2 = emitter (GND), Pin 3 = collector (output). This matches industry-standard pin assignments for SOT323 PNP devices including BC856 series, enabling direct PCB footprint reuse when substituting discrete transistors with RETs.