Diodes Incorporated ACX114EUQ-13R

Overview

ACX114EUQ-13R from Diodes Incorporated is a complementary pre-biased dual transistor in SOT363 package, integrating one NPN and one PNP small-signal transistor with built-in 10 kΩ bias resistors (R1 = R2 = 10 kΩ) per channel. It supports ±50 V supply voltage, delivers ±100 mA max collector current, and is AEC-Q101 qualified for automotive signal switching applications such as LED driver control and level translation in body electronics modules.

For engineers reviewing the ACX114EUQ-13R datasheet, ACX114EUQ-13R pinout, ACX114EUQ-13R application, or ACX114EUQ-13R equivalent, key selection criteria include verified input voltage thresholds (V_I(ON) = ±1.9–3.0 V), guaranteed saturation voltage (V_CE(SAT) ≤ ±0.3 V at ±10 mA), DC current gain (h_FE ≥ 30), thermal resistance (R_θJA = 450 °C/W), and automotive-grade reliability compliance.

Technical Context

This dual-transistor device implements two independent, resistor-equipped BJT channels - one NPN and one PNP - enabling complementary logic-level switching without external bias components. Each channel features matched 10 kΩ input resistors and operates over −55 °C to +150 °C, supporting high-reliability automotive signal conditioning where polarity reversal and low-power drive are required.

The device uses epitaxial planar die construction and is packaged in a lead-free, halogen-free SOT363 case rated UL 94V-0. Its absolute maximum ratings specify symmetrical ±50 V V_CC, ±100 mA I_C(max), and 270 mW total power dissipation, derated linearly above +25 °C ambient per JEDEC J-STD-020 Level 1 moisture sensitivity.

Key Specifications

Pinout & Package

SOT363 surface-mount package: 6-pin, molded green plastic case (UL 94V-0), 0.006 g weight, matte tin-plated leads, moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSBC114EVDW1T1G and DTC124EKAT146, ACX114EUQ-13R uniquely delivers matched NPN+PNP switching in one AEC-Q101-qualified package, reducing component count by 50% and eliminating inter-device timing skew in critical automotive control loops.

Availability

ACX114EUQ-13R is available at Aetrix Electronics and suitable for automotive body electronics, LED lighting control, industrial sensor interfaces, and power sequencing applications requiring stable component supply and long-term lifecycle support.

Supply support for ACX114EUQ-13R 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, energy-efficient components for automotive, industrial, and consumer markets.

The ACX114EUQ belongs to Diodes' automotive-qualified pre-biased transistor product line, engineered specifically for space-constrained, thermally demanding signal-switching applications in vehicle electronics where AEC-Q101 compliance and zero-defect manufacturing are mandatory.

FAQ

What is the maximum operating temperature for ACX114EUQ-13R?

The ACX114EUQ-13R is rated for junction and storage temperatures from −55 °C to +150 °C. Its thermal resistance (R_θJA = 450 °C/W) assumes mounting on a minimum-copper FR4 board; derating begins linearly above +25 °C ambient, reaching zero power at +150 °C case temperature.

Does ACX114EUQ-13R require external base resistors?

No. The device integrates 10 kΩ bias resistors (R1 and R2) for both NPN and PNP transistors, enabling direct connection to standard logic outputs. External resistors are unnecessary unless custom biasing or gain adjustment is required for specific load conditions.

How does the ACX114EUQ-13R differ from standard dual transistors?

Unlike generic dual transistors, ACX114EUQ-13R combines complementary NPN+PNP types with monolithically integrated bias resistors, AEC-Q101 qualification, and green packaging. This eliminates manual resistor placement, ensures channel matching, and guarantees automotive-grade reliability out-of-the-box.

Can ACX114EUQ-13R be used in high-frequency switching applications?

The device has a typical f_T of 250 MHz, but it is optimized for DC and low-frequency (<1 MHz) switching - not RF or high-speed digital applications. Its primary design value lies in robust, low-leakage, thermally stable signal control, not bandwidth performance.