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DDTA143EE-7-F

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Diodes Incorporated Digital Transistors, SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DDTA143EE-7-F

Diodes Incorporated · Digital Transistors · SOT-523

DDTA143EE-7-F from Diodes Incorporated, in a SOT-523. 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 to the built-in base bias network (R1 = 4.7kΩ NOM for DDTA143EE); input voltage is limited to +10 to -30 V relative to pin 2 (GND).
2 GND power_in Ground reference for the input voltage rating (pin 1 to pin 2) and the supply voltage rating (pin 3 to pin 2).
3 OUT output Output (collector of the internal PNP transistor); supply voltage VCC is limited to 50 V from pin 3 to pin 2, and output current IO is limited to -100 mA for DDTA143EE.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-523
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 Tolerance (R1) R1 -30 30 % 2
Resistance Ratio Tolerance (R2/R1) R2/R1 0.8 1 1.2 % 2
DC Current Gain Gl -20 VO = -5V, IO = -10mA (DDTA143EE) 2
Input Current Il -1.8 mA VI = -5V (DDTA143EE) 2
Output Current IO(OFF) -0.5 µA VCC = -50V, VI = 0V 2
Output Voltage VO(ON) -0.1 -0.3 V IO/Il = -10mA/-0.5mA (DDTA143EE) 2
Supply Voltage VCC 50 V Pin 3 to Pin 2 2
Input Voltage VIN -30 10 V Pin 1 to Pin 2 (DDTA143EE) 2
Output Current IO -100 mA DDTA143EE 2
Output Current (IC max) IC (Max) -100 mA 2
Power Dissipation PD 150 mW Notes 5 & 6 (per element) 2
Thermal Resistance, Junction to Ambient Air RθJA 833 °C/W Note 5 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Input Resistor (R1, nominal) R1 4.7 kΩ DDTA143EE nominal, per ordering/marking table 1
Gain-Bandwidth Product fT 250 MHz VCE = -10V, IE = 5mA, f = 100MHz (transistor only) 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: DDTA143EE-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-523
  • 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: ddta143ee-7-f-etched.step / ddta143ee-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddta143ee-7-f.step / ddta143ee-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 67f73dcb3690a4c5, retrieved 2026-10-17, 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