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DDTA144ECA-7-F

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

componenttransistorsddta144eca-7-ffactory-2.0.0extractor-text

Verified DDTA144ECA-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: DDTA144ECA-7-F · SOT-23 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 5-page datasheet
  • ✓distributor: lcsc C2759900, digikey DDTA144ECA-FDITR-ND, mouser 621-DDTA144ECA-7-F
  • ✓family: SOT-23
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-p6vxg8py/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.4)
  • ✓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✓ ddta144eca-7-f.kicad_sym✓ ddta144eca-7-f.kicad_mod✓ ddta144eca-7-f.step
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DDTA144ECA-7-F

Diodes Incorporated · Digital Transistors · SOT-23

DDTA144ECA-7-F 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 and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

Pinout

Pin Name Type Function
1 IN input Input terminal, connected through the built-in input resistor R1 (47 kΩ nominal for DDTA144ECA); input voltage from pin 1 to pin 2 is rated +10 to -40 V.
2 GND power_in Ground reference terminal; all voltage ratings are referenced to this pin, with supply voltage VCC rated -50 V from pin 3 to pin 2.
3 OUT output Output terminal (collector of the internal PNP transistor); output current for DDTA144ECA is rated -30 mA maximum.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Transistors
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 Tolerance R1 R1 -30 30 % 2
Resistance Ratio Tolerance R2/R1 R2/R1 0.8 1 1.2 % 2
DC Current Gain Gl 68 VO = -5V, IO = -5mA 2
Input Voltage (off) Vl(off) -0.5 -1.1 V VCC = -5V, IO = -100A 2
Input Voltage (on) Vl(on) -1.9 -3 V VO = -0.3V, IO = -2mA, DDTA144ECA 2
Output Voltage (on) VO(on) -0.1 -0.3 V IO/Il = -10mA/-0.5mA, DDTA144ECA 2
Input Current Il -0.18 mA VI = -5V 2
Output Current (off) IO(off) -0.5 A VCC = -50V, VI = 0V 2
Supply Voltage VCC -50 V Pin: (3) to (2) 2
Input Voltage VIN -40 10 V Pin: (1) to (2), DDTA144ECA 2
Output Current IO -30 mA DDTA144ECA 2
Output Current (Max) IC -100 mA 2
Power Dissipation PD 200 mW Mounted on FR-4 PC Board with minimum recommended pad layout (Note 7) 2
Thermal Resistance, Junction to Ambient Air RJA 625 °C/W Mounted on FR-4 PC Board with minimum recommended pad layout (Note 7) 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Nominal Input Resistor R1 47 kΩ R1, R2 (NOM), DDTA144ECA 1
Nominal Bias Resistor R2 47 kΩ R1, R2 (NOM), DDTA144ECA 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 (land: KiCad; 3D: generated from the datasheet)

  • Symbol: DDTA144ECA-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23, generated on the KiCad land (body 1.3 x 2.9 mm, terminals on the pads, 1.025 mm tall, datasheet A, nominal). 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: ddta144eca-7-f-etched.step / ddta144eca-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddta144eca-7-f.step / ddta144eca-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 238b94f121ac7005, retrieved 2026-11-13, tier: manufacturer)
  • 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: land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

Datasheet PDF