Diodes Incorporated ADTC114EUAQ-13

Overview

ADTC114EUAQ-13 from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT323 package, featuring integrated 10 kΩ base-emitter and base-collector bias resistors. It delivers DC current gain (h_FE) ≥30 at I_C = 5 mA, V_CE = 5 V, supports 50 mA output current, and operates across –55°C to +150°C for automotive signal switching applications.

For engineers reviewing the ADTC114EUAQ-13 datasheet, ADTC114EUAQ-13 pinout, ADTC114EUAQ-13 application, or ADTC114EUAQ-13 equivalent, this page provides verified package mapping, AEC-Q101 qualification status, R₁/R₂ tolerance specs (±30% / ±20%), V_CE(SAT) ≤0.3 V at I_O = 10 mA, and thermal resistance (R_θJA) = 375°C/W on FR4.

Technical Context

This device integrates two precision bias resistors (R₁ = R₂ = 10 kΩ nominal) to eliminate external components in digital logic interface circuits. Its epitaxial planar construction ensures stable h_FE and low V_CE(SAT), while the SOT323 package enables high-density automated assembly with moisture sensitivity level 1 compliance.

Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements including HTGB, HTRB, and temperature cycling. The "Green" halogen/antimony-free molding compound and matte tin-plated terminals comply with RoHS 2 and MIL-STD-202 solderability standards.

Key Specifications

Pinout & Package

SOT323 surface-mount plastic package: 3-terminal, 1.8–2.2 mm × 2.0–2.2 mm footprint, 0.9–1.0 mm height, 0.006 g weight, UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSV114EUAQ and EMH11T2R, ADTC114EUAQ-13 offers tighter h_FE minimum and lower V_CE(SAT), making it preferred for margin-constrained 3.3 V/5 V logic interfaces in automotive and industrial environments.

Availability

ADTC114EUAQ-13 is available at Aetrix Electronics and suitable for automotive LED drivers, industrial PLC input interfaces, and consumer appliance control panels requiring stable component supply and AEC-Q101-compliant parts.

Supply support for ADTC114EUAQ-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This device belongs to Diodes' AEC-Q101-qualified pre-biased transistor family, engineered specifically for automotive signal conditioning and industrial interface applications where space, reliability, and qualification rigor are critical.

FAQ

What is the exact pin configuration for ADTC114EUAQ-13 in SOT323?

Pin 1 is Emitter, Pin 2 is Base (internal junction of R₁ and R₂), and Pin 3 is Collector - confirmed by Diodes' official DS38924 Rev. 1–2 schematic and top-view diagram. This matches JEDEC-standard SOT323 orientation with emitter adjacent to the package notch.

Does ADTC114EUAQ-13 support 3.3 V logic-level input drive?

Yes: V_IN(OFF) ≤1.1 V and V_IN(ON) ≥1.9 V at 25°C ensure clean switching with standard 3.3 V CMOS outputs. Input current remains ≤0.88 mA at V_I = 5 V, confirming compatibility with microcontroller GPIO without additional current limiting.

How does the ±30% R₁ tolerance affect circuit performance?

R₁ tolerance directly impacts base current and thus saturation depth: at –30% (7 kΩ), base drive increases, improving saturation margin; at +30% (13 kΩ), base drive decreases, potentially raising V_CE(SAT). Designers must verify worst-case V_CE(SAT) ≤0.3 V under full temperature and voltage range per DS38924 test conditions.

Is ADTC114EUAQ-13 suitable for high-frequency PWM dimming?

Yes: its 250 MHz f_T supports clean switching at PWM frequencies up to 20 MHz. For typical LED dimming (1–10 kHz), propagation delay and rise/fall times remain sub-microsecond, ensuring minimal duty-cycle distortion and consistent brightness control.