Nexperia USA Inc. PDTA143EU/ZLX

Overview

PDTA143EU/ZLX from Nexperia is a PNP resistor-equipped transistor (RET) in SOT323 (SC-70) surface-mount package, designed for digital switching applications with built-in bias resistors R1 = 4.7 kΩ and R2 = 4.7 kΩ, −50 V V_CEO, −100 mA I_O, and AEC-Q101 qualification for automotive use.

For engineers reviewing the PDTA143EU/ZLX datasheet, PDTA143EU/ZLX pinout, PDTA143EU/ZLX application, or PDTA143EU/ZLX equivalent, key selection criteria include integrated bias network ratio (R2/R1 = 1), low on-state input voltage (−1.9 V typ at −20 mA), saturation performance (V_CEsat ≤ −150 mV), and thermal resistance (R_th(j-a) = 625 K/W).

Technical Context

This PNP RET integrates two precision bias resistors (R1 = 4.7 kΩ, R2 = 4.7 kΩ) to eliminate external base resistors, enabling direct logic-level drive from microcontrollers or gate drivers. Its R2/R1 ratio of 1.0 ensures predictable turn-on behavior under varying temperature and process conditions.

The device operates as a single-polarity digital switch with open-base V_CEO = −50 V and supports −100 mA continuous output current. It features low off-state input voltage (V_I(off) = −1.1 V typ) and high DC current gain (h_FE ≥ 30 at −10 mA), making it suitable for IC input control and load switching in space-constrained designs.

Key Specifications

Pinout & Package

SOT323 (SC-70) plastic surface-mounted package: 3-lead, very small outline (2.2 mm × 1.35 mm × 1.1 mm), optimized for high-density PCB layouts and reflow soldering only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC143EU, PDTA143EU enables high-side switching with non-inverted logic; compared with BC857BW, it reduces layout area by 60% and eliminates resistor tolerance stacking effects on switching threshold.

Availability

PDTA143EU/ZLX is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance control systems requiring stable component supply and AEC-Q101 compliance.

Supply support for PDTA143EU/ZLX 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and automotive-grade quality.

The PDTA143E series belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT-resistor combinations in digital switching applications across automotive, industrial, and consumer markets.

FAQ

What is the function of the internal R2 resistor in PDTA143EU/ZLX?

The internal R2 resistor connects between base and emitter, forming a pull-down path that ensures reliable turn-off when the input signal is high-impedance or floating. With R2 = 4.7 kΩ and R1 = 4.7 kΩ, it establishes a defined bias network that prevents unintended conduction and improves noise immunity over discrete implementations.

Can PDTA143EU/ZLX be used in 1.8 V logic systems?

No - PDTA143EU/ZLX has a typical V_I(on) of −1.9 V and minimum V_I(on) of −2.5 V, requiring ≥2.5 V negative input swing for guaranteed turn-on. It is compatible with 3.3 V and 5 V CMOS/TTL logic families but not with 1.8 V systems without level-shifting circuitry.

How does the AEC-Q101 qualification impact design validation for automotive use?

AEC-Q101 qualification confirms PDTA143EU/ZLX has passed stress tests including HTOL, temperature cycling, HAST, and ESD (≥2 kV HBM), eliminating need for redundant qualification at module level. It permits direct use in automotive body electronics, infotainment, and ADAS subsystems meeting ISO/TS 16949 requirements.

Is thermal derating required for continuous 100 mA operation?

Yes - at ambient temperatures above 25 °C, power dissipation must be reduced per the derating curve (Fig 1). With P_tot = 200 mW at 25 °C and R_th(j-a) = 625 K/W, full 100 mA operation is only sustainable up to ~75 °C ambient; above that, current must be limited to maintain T_j ≤ 150 °C.