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DTC144EUAQ

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Yangzhou Yangjie Elec Tech Digital Transistors, SOT-323(SC-70). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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DTC144EUAQ

Yangzhou Yangjie Elec Tech · Digital Transistors · SOT-323(SC-70)

DTC144EUAQ from Yangzhou Yangjie Elec Tech, in a SOT-323(SC-70). 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 through built-in R1 (typ 47 kΩ) to the base; VI(off) min 0.5 V at VCC=5V, VI(on) max 3 V, input voltage rating -10 to +40 V.
2 GND power_in Ground, connected to the emitter and to R2 of the built-in bias network.
3 OUT output Open-collector output of the NPN transistor; VCEO 50 V, collector current up to 100 mA, VO(on) max 0.3 V at IO=10mA.

Key specifications

Parameter Value
Manufacturer Yangzhou Yangjie Elec Tech
Package SOT-323(SC-70)
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
Input resistance R1 32.9 47 61.1 kΩ 2
Resistance ratio R2/R1 0.8 1 1.2 2
Input voltage (off) VI(off) 0.5 V VCC=5V,IO=100uA 2
Input voltage (on) VI(on) 3 V VO=0.3V,IO=2mA 2
Output voltage VO(on) 0.3 V IO=10mA, II=0.5 mA 2
Input current II 0.18 mA VI=5V 2
Output current IO(off) 0.5 uA VCC=50V, VI=0 2
DC current gain GI 68 VO=5V, IO=5mA 2
Collector-Emitter Voltage VCEO 50 V Ta=25℃ 2
Collector-Base Voltage VCBO 50 V Ta=25℃ 2
Emitter-Base Voltage VEBO 10 V Ta=25℃ 2
Supply Voltage VCC 50 V Ta=25℃ 2
Input Voltage VIN -10 40 V Ta=25℃ 2
Collector Current IC 100 mA Ta=25℃ 2
Power Dissipation PD 200 mW Device mounted on FR-4 PCB 1.0 x 1.0 x 0.06 inch 2
Junction Temperature Tj -55 150 ℃ 2
Storage Temperature TSTG -55 150 ℃ 2
Transition frequency fT 250 MHz VCE=10V, IC=5mA, f=100MHz 2

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：Tin plated leads, solderable per J-STD-002 and JESD22-B102 1

CAD (KiCad official)

  • Symbol: DTC144EUAQ
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323(SC-70) (KiCad packages3D, STEP)
  • 3D model files: dtc144euaq-etched.step / dtc144euaq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dtc144euaq.step / dtc144euaq.glb are the bare package body.

Provenance

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

  • Datasheet: Yangzhou Yangjie Elec Tech datasheet (5 pp, sha256 f79abb570267d1e8, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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