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DDTC143EUA-7-F

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Diodes Incorporated Digital Transistors, SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistors-thyristorsddtc143eua-7-ffactory-2.0.0extractor-text
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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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DDTC143EUA-7-F

Diodes Incorporated · Digital Transistors · SOT-323

DDTC143EUA-7-F from Diodes Incorporated, in a SOT-323. 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 pin, connected to the base through the built-in input resistor R1 (4.7k nominal for DDTC143EUA); input voltage is limited to -10 V to +30 V referenced to pin 2 (GND).
2 GND power_in Ground (emitter) reference pin; the supply and input voltage ratings are specified between pin 3 and pin 2 and pin 1 and pin 2.
3 OUT output Output pin (collector) with supply voltage VCC up to 50 V referenced to pin 2, and output current rated at 100 mA for DDTC143EUA.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-323
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 Resistor (R1) Tolerance R1 -30 30 % 2
Resistance Ratio R2/R1 0.8 1 1.2 2
Input Voltage (OFF) Vl(OFF) 0.5 1.1 V VCC = 5V, IO = 100µA 2
Input Voltage (ON) Vl(ON) 1.9 3 V VO = 0.3V, IO = 20mA, DDTC143EUA 2
Output Voltage (ON) VO(ON) 0.1 0.3 V IO/Il = 10mA/0.5mA, DDTC143EUA 2
Output Current (OFF) IO(OFF) 0.5 µA VCC = 50V, VI = 0V 2
Input Current Il 1.8 mA VI = 5V, DDTC143EUA 2
DC Current Gain Gl 20 VO = 5V, IO = 10mA, DDTC143EUA 2
Supply Voltage (absolute maximum) VCC 50 V Pin: (3) to (2) 2
Input Voltage (absolute maximum) VIN -10 30 V Pin: (1) to (2), DDTC143EUA 2
Output Current (absolute maximum) IO 100 mA DDTC143EUA 2
Output Current All (absolute maximum) IC(MAX) 100 mA 2
Power Dissipation PD 200 mW Note 6: mounted on FR-4 PC board with minimum recommended pad layout 2
Thermal Resistance, Junction to Ambient Air RθJA 625 C/W Note 6: mounted on FR-4 PC board with minimum recommended pad layout 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 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: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: DDTC143EUA-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: ddtc143eua-7-f-etched.step / ddtc143eua-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddtc143eua-7-f.step / ddtc143eua-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (5 pp, sha256 aaf1276e48864742, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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