Nexperia USA Inc. PDTA123YU,115

Overview

PDTA123YU from Nexperia is a PNP resistor-equipped transistor (RET) designed for general-purpose switching in low-power digital interface circuits, featuring integrated bias resistors R1 = 2.2 kΩ and R2/R1 = 4.5, −50 V V_CEO, −100 mA I_O, and SOT323 (SC-70) package for space-constrained PCB layouts.

For engineers reviewing the PDTA123YU datasheet, PDTA123YU pinout, PDTA123YU application, or PDTA123YU equivalent, this device serves as a drop-in replacement for discrete base-resistor transistor configurations in level-shifting, LED driving, and microcontroller I/O buffering where simplified BOM and reduced layout complexity are critical.

Technical Context

This PNP RET integrates two precision thin-film resistors (R1 = 2.2 kΩ, R2 = 10 kΩ) directly into the silicon die to form a fixed-current gain control network, eliminating external base bias components. Its internal topology ensures predictable turn-on/off behavior with VI(on) = −1.15 V and VI(off) = −0.75 V at defined load conditions.

The device operates with open-base V_CEO = −50 V and supports DC output current up to −100 mA while maintaining V_CEsat ≤ −150 mV at I_C = −10 mA / I_B = −0.5 mA, enabling efficient low-voltage switching in 3.3 V and 5 V logic domains.

Key Specifications

Pinout & Package

SOT323 (SC-70) is a 3-lead surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.95 mm, optimized for high-density routing and reflow-compatible assembly. Its compact footprint supports automated pick-and-place with standard 4 mm tape-and-reel packaging (−115 variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC123YU, PDTA123YU provides complementary PNP functionality with identical footprint and biasing-enabling dual-polarity design reuse. Against EMH11T2R, it delivers triple the output current at lower input voltage thresholds, making it preferable for robust digital switching in industrial control I/O modules.

Availability

PDTA123YU is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller I/O buffering, logic inverter stages, and power rail enable switches requiring stable component supply across automotive infotainment, industrial HMI, and consumer appliance designs.

Supply support for PDTA123YU 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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products business, with core expertise in high-volume, high-reliability silicon for automotive, industrial, and computing markets.

PDTA123YU belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to reduce bill-of-materials complexity and improve manufacturing yield in cost-sensitive digital interface applications.

FAQ

What is the maximum continuous collector current for PDTA123YU?

The maximum continuous DC output current (I_O) is −100 mA, specified under ambient temperature ≤25 °C with no forced airflow. Derating applies above 25 °C per the thermal resistance R_th(j-a) = 625 K/W; at 70 °C ambient, usable current reduces to approximately −65 mA to maintain junction temperature below 150 °C.

Can PDTA123YU replace a discrete PNP transistor plus two external resistors?

Yes-PDTA123YU integrates R1 = 2.2 kΩ and R2 = 10 kΩ directly onto the die, replicating the function of a BC807-16 with 2.2 kΩ base resistor and 10 kΩ base-emitter pull-down. Pin compatibility with SOT323-packaged discretes allows direct footprint reuse, though layout must respect its fixed internal topology (pin 1 = base input, pin 2 = emitter, pin 3 = collector).

What is the recommended soldering method for PDTA123YU?

Reflow soldering is the only recommended method, per Nexperia's datasheet. The SOT323 package is rated for JEDEC J-STD-020D-compliant reflow profiles with peak temperatures up to 260 °C. Wave soldering and hand soldering are not advised due to thermal stress risks and potential damage to internal resistors or bond wires.

Does PDTA123YU support operation at −40 °C?

Yes-PDTA123YU is fully characterized from −40 °C to +150 °C junction temperature. Electrical parameters including h_FE, V_CEsat, and VI(on)/VI(off) are guaranteed across this range, with typical performance curves provided in Figures 1–4 of the datasheet. No derating is required for cold-start operation in outdoor or automotive environments.