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ADTC144WCAQ-7

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Diodes Incorporated Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ADTC144WCAQ-7

Diodes Incorporated · Digital Transistors · SOT-23

ADTC144WCAQ-7 from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN input Input (transistor base via R1 = 47kΩ) with absolute maximum VIN of -10 to +40 V relative to pin 2, guaranteed OFF below 0.8 V and ON above 4 V.
2 GND power_in Ground (0 V) reference pin (emitter), the return for the input voltage and supply voltage ratings.
3 OUT output Output (open collector) with absolute maximum supply voltage VCC of 50 V relative to pin 2, output current IO 30 mA and IC (max) 100 mA.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VCC 50 V Pin (3) to (2), TA=+25°C 2
Input Voltage VIN -10 40 V Pin (1) to (2), TA=+25°C 2
Output Current IO 30 mA TA=+25°C 2
Output Current IC (Max) 100 mA TA=+25°C 2
Power Dissipation PD 310 mW Note 6, mounted on FR-4 PC board with minimum recommended pad layout, TA=+25°C 2
Thermal Resistance, Junction to Ambient Air RθJA 403 °C/W Note 6, minimum recommended pad layout 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Input Resistor Tolerance R1 -30 30 % 4
Resistance Ratio Tolerance R2/R1 -20 20 % 4
Input Voltage (OFF) Vl(OFF) 0.8 V VCC = 5V, IO = 100μA 4
Input Voltage (ON) Vl(ON) 4 V VO = 0.3V, IO = 2mA 4
Output Voltage VO(ON) 0.1 0.3 V IO/Il = 10mA/0.5mA 4
Output Current (OFF) IO(OFF) 0.5 μA VCC = 50V, VI = 0V 4
DC Current Gain Gl 56 VO = 5V, IO = 5mA 4
Gain-Bandwidth Product fT 250 MHz VCE = 10V, IE = 5mA, f = 100MHz; for reference only 4
Input Resistor R1 nominal R1 47 kΩ NOM 1
Resistor R2 nominal R2 22 kΩ NOM 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin  Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: ADTC144WCAQ-7
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: adtc144wcaq-7-etched.step / adtc144wcaq-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adtc144wcaq-7.step / adtc144wcaq-7.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 ed328e1aa7ec6d5b, retrieved 2026-10-24, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF