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DDTC144GUA-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-thyristorsddtc144gua-7-ffactory-2.0.0extractor-text

Verified DDTC144GUA-7-F

by Ray · last 13 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

13 Nov 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • •array (skip): not an array of element pairs
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: DDTC144GUA-7-F · SOT-323 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 3-page datasheet
  • ✓distributor: lcsc C5245897, digikey 31-DDTC144GUA-7-FTR-ND, mouser 621-DDTC144GUA-7-F
  • ✓family: SOT-323_SC-70
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-8_ruv0e7/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.1)
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 17 kB, viewers/symbol.html 7 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ddtc144gua-7-f.kicad_sym✓ ddtc144gua-7-f.kicad_mod✓ ddtc144gua-7-f.step
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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

markdown

DDTC144GUA-7-F

Diodes Incorporated · Digital Transistors · SOT-323

DDTC144GUA-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 and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

Pinout

Pin Name Type Function
1 B input Base input, connected to the transistor base with the internal R2 bleeder resistor (47kΩ nominal, ±30%) from base to emitter; VEBO max 5 V.
2 E passive Emitter of the NPN transistor, normally tied to ground; R2 bleeder resistor connects between base and emitter.
3 C passive Collector of the NPN transistor; VCEO 50 V, VCBO 50 V and IC max 100 mA.

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
Collector-Base Breakdown Voltage BVCBO 50 V IC = 50μA 2
Collector-Emitter Breakdown Voltage BVCEO 50 V IC = 1mA 2
Emitter-Base Breakdown Voltage BVEBO 5 V IE = 160μA, DDTC144GUA 2
Collector Cutoff Current ICBO 0.5 μA VCB = 50V 2
Emitter Cutoff Current IEBO 65 130 μA VEB = 4V, DDTC144GUA 2
Collector-Emitter Saturation Voltage VCE(sat) 0.3 V IC = 10mA, IB = 0.5mA 2
DC Current Transfer Ratio hFE 68 IC = 5mA, VCE = 5V 2
Bleeder Resistor (R2) Tolerance ΔR2 -30 30 % 2
Bleeder Resistor R2 (nominal) R2 47 kΩ R2 (NOM), DDTC144GUA 1
Collector-Base Voltage VCBO 50 V TA = 25°C 1
Collector-Emitter Voltage VCEO 50 V TA = 25°C 1
Emitter-Base Voltage VEBO 5 V TA = 25°C 1
Collector Current IC (Max) 100 mA TA = 25°C 1
Power Dissipation Pd 200 mW TA = 25°C 1
Operating and Storage Temperature Range Tj, TSTG -55 150 °C 1
Thermal Resistance, Junction to Ambient Air RθJA 625 °C/W Mounted on FR4 PC board with recommended pad layout (Note 1) 1
Gain-Bandwidth Product fT 250 MHz VCE = 10V, IE = -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: Solderable per MIL-STD-202, Method 208 • Lead Free Plating (Matte Tin Finish annealed over 1

CAD (land: KiCad; 3D: generated from the datasheet)

  • Symbol: DDTC144GUA-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323, generated on the KiCad land (body 1.25 x 2.1 mm, terminals on the pads, 0.95 mm tall, datasheet A, midpoint of min and max). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
  • 3D model files: ddtc144gua-7-f-etched.step / ddtc144gua-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddtc144gua-7-f.step / ddtc144gua-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (3 pp, sha256 a613f194df3f51a9, retrieved 2026-11-13, tier: manufacturer)
  • 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: land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

Datasheet PDF