Diodes Incorporated ADTA144VCAQ-7

Overview

ADTA144VCAQ from Diodes Incorporated is a PNP pre-biased small-signal surface-mount transistor in SOT23 package, featuring integrated 47 kΩ and 10 kΩ bias resistors, AEC-Q101 qualification for automotive use, -50 V V_CC, and -100 mA I_C(max). It functions as an inverter-level switching device in low-power digital interface circuits.

For engineers reviewing the ADTA144VCAQ datasheet, ADTA144VCAQ pinout, ADTA144VCAQ application, or ADTA144VCAQ equivalent, key selection criteria include guaranteed turn-on/off thresholds (-5.0 V / -1.0 V), low saturation voltage (-0.1 V typ at -10 mA), DC current gain (h_FE ≥ 33), thermal resistance (403 °C/W), and automotive-grade reliability under IATF 16949 manufacturing.

Technical Context

This device implements a monolithic PNP bipolar transistor with two on-die base biasing resistors (R1 = 47 kΩ, R2 = 10 kΩ) enabling single-resistor input drive and eliminating external bias network design. Its guaranteed logic-compatible input thresholds (V_IN(on) ≤ -5.0 V, V_IN(off) ≥ -1.0 V) support direct interfacing with 5 V and 3.3 V CMOS/TTL outputs.

The ADTA144VCAQ delivers -0.1 V typical V_CE(sat) at -10 mA output current and maintains usable gain-bandwidth product (f_T = 250 MHz) for moderate-speed switching up to ~10 MHz. It operates across -55 °C to +150 °C and meets AEC-Q101 stress test requirements including HTGB, ELFR, and temperature cycling.

Key Specifications

Pinout & Package

Package: SOT23 - ultra-compact 3-pin surface-mount plastic package (2.9 mm × 1.3 mm × 1.0 mm), UL 94V-0 rated, moisture sensitivity level 1, matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSV144VCAQ and DXT3904P-7, ADTA144VCAQ uniquely combines AEC-Q101 qualification, precise -5.0 V turn-on guarantee, and lowest V_CE(sat) among SOT23 pre-biased PNP transistors-making it optimal for automotive and safety-critical industrial switching where reliability and deterministic behavior are mandatory.

Availability

ADTA144VCAQ is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input stages, USB-C power delivery sinks, and medical patient monitor interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for ADTA144VCAQ 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 ADTA144VCAQ belongs to Diodes' Automotive-Grade Pre-Biased Transistor (PBT) product line, engineered specifically for reliable signal inversion and load switching in harsh automotive and industrial environments where AEC-Q101 compliance and thermal robustness are essential.

FAQ

What is the maximum allowable collector-emitter voltage for ADTA144VCAQ?

The absolute maximum V_CE rating is -50 V, defined as the voltage between Pin 3 (Collector) and Pin 1 (Emitter) under all operating conditions. This rating applies at T_A = +25 °C and must be derated linearly above 25 °C per the R_θJA = 403 °C/W thermal resistance value specified in the datasheet.

Can ADTA144VCAQ replace a standard PNP BJT like MMBT3906 in existing designs?

No-ADTA144VCAQ is not a drop-in replacement for MMBT3906 because it integrates base bias resistors and has different pinout (Emitter-Base-Collector vs Collector-Base-Emitter). Direct substitution would require schematic and layout revision to accommodate its inverting configuration and internal resistor network.

Does ADTA144VCAQ support operation at -40 °C ambient temperature?

Yes-its specified operating temperature range is -55 °C to +150 °C junction temperature. At -40 °C ambient, with typical power dissipation (≤100 mW), junction temperature remains well within limits. The device maintains guaranteed V_IN(on) and V_CE(sat) performance across this full range per AEC-Q101 test data.

What does the "2M2" marking on the SOT23 package indicate?

"2M2" is the top-side product type marking code for ADTA144VCAQ. It is distinct from date code (e.g., "YM") and identifies the specific die configuration and bias resistor values. This marking enables visual verification of part identity during assembly and inspection, and is consistent across all reels and packaging variants (-7 and -13).