Diodes Incorporated ADTA144ECAQ-13

Overview

ADTA144ECAQ-13 from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT23 package, featuring integrated 47 kΩ base bias resistors (R1 = R2), AEC-Q101 qualification for automotive use, −50 V V_CC, and −100 mA I_C(max). It functions as a digital switch or level translator in low-power control circuits, such as LED driver enable stages and microcontroller I/O interface buffers.

For engineers reviewing the ADTA144ECAQ-13 datasheet, ADTA144ECAQ-13 pinout, ADTA144ECAQ-13 application, or ADTA144ECAQ-13 equivalent, key selection criteria include its guaranteed −1.9 V V_I(ON) threshold at −2 mA load, 68 minimum DC current gain (h_FE), −0.3 V V_O(ON) saturation voltage, and automotive-grade reliability under −55 °C to +150 °C operation.

Technical Context

This device implements a monolithic PNP bipolar transistor with two matched on-die 47 kΩ base-emitter and base-collector biasing resistors, enabling direct logic-level drive without external components. Its internal resistor ratio tolerance (±20%) and input resistor tolerance (±30%) ensure predictable turn-on behavior across temperature.

The transistor operates as a saturated switch with guaranteed −0.3 V V_O(ON) at −10 mA output current and −0.5 mA input current, supporting robust noise margin in 3.3 V/5 V digital systems. Its 250 MHz f_T supports high-speed switching up to ~10 MHz in non-critical timing applications.

Key Specifications

Pinout & Package

SOT23 plastic surface-mount package with matte tin-plated leads, UL 94V-0 rated molding compound, and moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSV144EKT3G and DXTA144ECA-7, ADTA144ECAQ-13 uniquely combines AEC-Q101 qualification, +150 °C operation, and 310 mW power dissipation-making it the sole choice for thermally demanding automotive body electronics requiring long-term reliability.

Availability

ADTA144ECAQ-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital outputs, and medical diagnostic equipment interfaces requiring stable component supply and full AEC-Q101 compliance.

Supply support for ADTA144ECAQ-13 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 computing markets.

The ADTA144ECAQ belongs to Diodes' AEC-Q101-qualified pre-biased transistor product line, designed specifically for simplified digital interface and load-switching in harsh-environment automotive electronics.

FAQ

What is the maximum continuous collector current for ADTA144ECAQ-13?

The absolute maximum rated collector current is −100 mA, verified per DS38877 Rev. 2. At this current, V_O(ON) remains ≤ −0.3 V with −0.5 mA input drive, and junction temperature must be maintained ≤ +150 °C using appropriate PCB copper area per the derating curve. Continuous operation above −30 mA requires thermal evaluation on the target board.

Does ADTA144ECAQ-13 require external bias resistors?

No. The device integrates two matched 47 kΩ resistors (R1 = R2) internally, forming a complete pre-biased PNP configuration. This eliminates the need for external base resistors in standard switching applications, reducing component count and layout complexity while maintaining predictable VI(ON) and VI(OFF) thresholds.

Is ADTA144ECAQ-13 suitable for 5 V logic interfacing?

Yes. With a typical VI(ON) of −1.9 V and VI(OFF) of −1.1 V, the part reliably switches ON when driven by standard 5 V CMOS outputs (via level-shifting resistor or direct connection to negative rail), delivering −10 mA output current with <−0.3 V saturation voltage-ensuring adequate noise margin and low power loss.

What is the moisture sensitivity level (MSL) for this part?

ADTA144ECAQ-13 has MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/60% RH without baking prior to reflow. The SOT23 package uses moisture-resistant green molding compound, and the matte tin finish ensures solderability per MIL-STD-202 Method 208 without preconditioning.