Diodes Incorporated ADTA114YUAQ-7

Overview

ADTA114YUAQ from Diodes Incorporated is a PNP pre-biased transistor in SOT323 package, featuring integrated 10 kΩ and 47 kΩ bias resistors, AEC-Q101 qualification for automotive use, -100 mA maximum collector current, and -50 V V_CC rating. It functions as a compact, surface-mount logic-level switch in low-power automotive signal conditioning circuits.

For engineers reviewing the ADTA114YUAQ datasheet, ADTA114YUAQ pinout, ADTA114YUAQ application, or ADTA114YUAQ equivalent, key selection criteria include its guaranteed turn-on threshold (-1.4 V), off-state leakage (< -0.5 µA at -50 V), DC current gain (68 min), thermal resistance (375 °C/W), and automotive-grade reliability under -55 °C to +150 °C operation.

Technical Context

This device integrates two precision bias resistors (R1 = 10 kΩ, R2 = 47 kΩ) directly into a PNP epitaxial planar transistor die, eliminating external base-resistor placement. Its input voltage thresholds-V_I(OFF) ≤ -0.3 V and V_I(ON) ≥ -1.4 V-enable robust digital interface compatibility with 3.3 V and 5 V logic families driving negative-going control signals.

The SOT323 package supports automated assembly and delivers 330 mW power dissipation on FR-4 PCBs with minimum copper pad layout. Its f_T of 250 MHz (at V_CE = -10 V, I_E = -5 mA) supports moderate-speed switching up to ~10 MHz in buffered driver applications.

Key Specifications

Pinout & Package

SOT323 is a 3-pin, surface-mount plastic package measuring 2.15 mm × 2.10 mm × 0.95 mm (L × W × H), with matte tin-plated leads, moisture sensitivity level 1, and UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP pre-biased transistor applications.

Compared with NSV114YUT1G and DXTA114YUQ-7, ADTA114YUAQ uniquely combines AEC-Q101 qualification, integrated dual-resistor biasing, and guaranteed -1.4 V turn-on threshold-making it the sole choice for automotive high-side logic-controlled switching where reliability, footprint, and design simplicity are jointly critical.

Availability

ADTA114YUAQ is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, LED indicator drivers, and power sequencing circuits requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADTA114YUAQ 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and consumer markets with ISO/TS 16949 and IATF 16949 certified facilities.

The ADTA114YUAQ belongs to Diodes' Automotive-Grade Pre-Biased Transistor (PBT) product line, engineered specifically to replace discrete BJT + resistor combinations in space-constrained, high-reliability automotive control modules.

FAQ

What is the guaranteed input voltage range for reliable switching?

The ADTA114YUAQ guarantees turn-off when input voltage is ≤ -0.3 V and turn-on when input voltage is ≥ -1.4 V, measured with V_CC = -5 V and specified load conditions. This 1.1 V hysteresis ensures noise immunity in automotive 12 V systems with ground bounce and supply ripple. These thresholds are tested and guaranteed across temperature and process variations per AEC-Q101 requirements.

Can ADTA114YUAQ be used in high-frequency switching applications?

With a gain-bandwidth product (f_T) of 250 MHz, the ADTA114YUAQ supports small-signal switching up to ~10 MHz under typical bias conditions. However, its SOT323 package parasitics and bipolar saturation delay limit practical PWM duty-cycle control to ≤ 100 kHz for reliable turn-off. For >1 MHz switching, a MOSFET-based solution is recommended.

Is the SOT323 package compatible with standard reflow profiles?

Yes-the ADTA114YUAQ's SOT323 package has moisture sensitivity level 1 (MSL-1), meaning it can be stored indefinitely at ≤ 30 °C/85 % RH and processed using standard lead-free reflow profiles (peak 260 °C, 60 s max above 217 °C). No baking is required prior to assembly, simplifying manufacturing logistics.

How does the internal resistor tolerance affect circuit performance?

R1 tolerance is ±30 % and R2/R1 ratio tolerance is ±20 %, directly impacting base current accuracy and thus collector current consistency. At I_O = -5 mA, this results in ±20 % variation in saturation voltage and ±15 % variation in switching threshold-acceptable for non-critical digital interfacing but requiring margin in precision current-source designs.