Diodes Incorporated ADTC114YUAQ-13

Overview

ADTC114YUAQ-13 from Diodes Incorporated is an AEC-Q101 qualified NPN pre-biased small-signal transistor in SOT323 package, featuring integrated 10 kΩ and 47 kΩ bias resistors, 100 mA maximum collector current, 50 V V_CC, and 250 MHz f_T, used for automotive signal switching in body control modules.

For engineers reviewing the ADTC114YUAQ-13 datasheet, ADTC114YUAQ-13 pinout, ADTC114YUAQ-13 application, or ADTC114YUAQ-13 equivalent, key selection criteria include guaranteed logic-level turn-on (V_IN(ON) ≤ 1.4 V), low saturation voltage (V_CE(SAT) ≤ 0.3 V at 5 mA), ±30% R1 tolerance, AEC-Q101 qualification, and SOT323 thermal resistance of 375 °C/W.

Technical Context

This device integrates base-emitter and base-collector bias resistors (R1 = 10 kΩ, R2 = 47 kΩ) to eliminate external components in digital switching circuits. It operates as a single-transistor logic interface with defined input threshold (V_IN(OFF) ≤ 0.3 V, V_IN(ON) ≥ 1.4 V) and delivers DC current gain (h_FE) ≥ 68 at 5 mA collector current.

The SOT323 package enables high-density mounting on automotive PCBs with 0.006 g mass and JEDEC Level 1 moisture sensitivity. Thermal derating begins above 25 °C ambient, with full 330 mW power dissipation only at T_A = 25 °C on minimum-copper FR-4 board.

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, UL 94V-0 flammability rating, and JEDEC Level 1 moisture sensitivity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSV114YUT1G and DTC114YKAT146, ADTC114YUAQ-13 uniquely combines AEC-Q101 qualification, 100 mA I_C, and 13″ reel packaging-making it optimal for high-volume automotive production requiring PPAP documentation and extended supply continuity.

Availability

ADTC114YUAQ-13 is available at Aetrix Electronics and suitable for automotive body control modules, LED indicator drivers, smart sensor interfaces, and industrial I/O expansion requiring stable component supply and AEC-Q101 compliance.

Supply support for ADTC114YUAQ-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.

The ADTC series belongs to Diodes' AEC-Q101-qualified pre-biased transistor product line, engineered specifically for simplified digital switching in automotive electronics where reliability, space savings, and qualification assurance are mandatory.

FAQ

What is the maximum operating temperature for ADTC114YUAQ-13?

The device is rated for junction and storage temperatures from –55 °C to +150 °C. Its thermal resistance (R_θJA) is 375 °C/W on a minimum-copper FR-4 board, so sustained operation at 150 °C requires strict power derating-e.g., ≤100 mW at T_A = 100 °C per the published derating curve.

Does ADTC114YUAQ-13 require external bias resistors?

No. It integrates a 10 kΩ resistor between base and input (pin 2), and a 47 kΩ resistor between base and emitter (pin 1), forming a fixed-voltage-divider bias network. This eliminates the need for two external resistors in standard digital switching configurations.

Is ADTC114YUAQ-13 suitable for 3.3 V logic interfacing?

Yes. Its guaranteed V_IN(ON) ≤ 1.4 V ensures reliable turn-on with 3.3 V CMOS/TTL outputs, and its V_IN(OFF) ≤ 0.3 V provides noise margin against ground bounce. The internal R1/R2 ratio also maintains stable h_FE across process and temperature variation.

How does the SOT323 package affect thermal performance?

The SOT323 package has a relatively high R_θJA of 375 °C/W on minimal FR-4 copper, limiting continuous power dissipation to 330 mW at 25 °C ambient. For higher-power operation, designers must increase copper area or add thermal vias-otherwise, thermal shutdown or parameter shift may occur above 85 °C ambient.