Diodes Incorporated ADTC124ECAQ-13

Overview

ADTC124ECAQ-13 from Diodes Incorporated is an AEC-Q101-qualified NPN pre-biased small-signal transistor in SOT23 package, featuring integrated 22 kΩ bias resistors (R1 = R2), 50 V V_CC, 30 mA I_O, and 250 MHz f_T, used for level-shifting and digital switching in automotive body control modules.

For engineers reviewing the ADTC124ECAQ-13 datasheet, ADTC124ECAQ-13 pinout, ADTC124ECAQ-13 application, or ADTC124ECAQ-13 equivalent, key selection criteria include input voltage thresholds (V_I(OFF) = 0.5–1.1 V, V_I(ON) = 1.9–3 V), output saturation voltage (V_O(ON) ≤ 0.3 V at 5 mA), DC current gain (h_FE ≥ 56), and automotive-grade thermal reliability (T_J = –55 to +150 °C).

Technical Context

This device integrates matched 22 kΩ base bias resistors to enable single-resistor-input logic-level interfacing without external components. Its epitaxial planar construction ensures stable h_FE and low V_CE(SAT) across temperature (–25 to +75 °C typical curves shown).

The transistor operates as a digital inverter with defined logic thresholds: it switches fully OFF below 1.1 V input and fully ON above 1.9 V (at V_CC = 5 V), delivering ≤0.3 V output saturation at 5 mA load while maintaining <0.36 mA input current at 5 V.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount, 3-pin plastic case rated UL 94V-0, moisture sensitivity Level 1, 0.008 g weight, compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSV12401T1G and DTC124EKAT146, ADTC124ECAQ-13 uniquely combines AEC-Q101 qualification, matched 22 kΩ bias resistors, and guaranteed 3.3 V logic compatibility-making it the only option qualified for automotive body electronics requiring production traceability and –40 to +125 °C operation.

Availability

ADTC124ECAQ-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital outputs, and LED driver circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADTC124ECAQ-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 ADTC series belongs to Diodes' AEC-Q101-qualified pre-biased transistor product line, designed specifically for simplified digital signal interfacing in automotive electronics with reduced component count and enhanced thermal robustness.

FAQ

What is the maximum continuous output current for ADTC124ECAQ-13?

The device supports a continuous output current (I_O) of 30 mA per the Absolute Maximum Ratings table. At this current, V_O(ON) remains ≤0.3 V with V_CC = 5 V and ambient temperature ≤85 °C. Exceeding 30 mA risks thermal overload given its 310 mW power dissipation limit on FR4 board.

Does ADTC124ECAQ-13 require external bias resistors?

No. It integrates two matched 22 kΩ resistors (R1 = R2) internally, forming a complete base bias network. This eliminates the need for external resistors in standard inverter or switch configurations, reducing PCB footprint and component count while ensuring consistent switching thresholds.

Is ADTC124ECAQ-13 suitable for 3.3 V microcontroller GPIO interfacing?

Yes. Its V_I(ON) range (1.9–3 V) and V_I(OFF) range (0.5–1.1 V) ensure reliable switching with 3.3 V logic outputs. At V_I = 3.3 V, input current is <0.36 mA, well within GPIO drive capability, and output saturation remains ≤0.3 V at 5 mA load.

How does the AEC-Q101 qualification impact design validation?

AEC-Q101 qualification confirms the device has passed stress tests including HTOL, TC, HAST, and ESD (HBM ≥ 8 kV), validating suitability for automotive under-hood environments. This eliminates the need for customer-level reliability requalification and supports PPAP submission with full test reports from Diodes Incorporated.