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DDTC143ZCAQ-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.

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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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DDTC143ZCAQ-7-F

Diodes Incorporated · Digital Transistors · SOT-23

DDTC143ZCAQ-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, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN input Input (base side) through the 4.7kΩ R1 bias resistor, with an absolute maximum input voltage of -5 to +30 V for the DDTC143ZCA, measured pin 1 to pin 2.
2 GND power_in Ground (0 V) reference, connected to the emitter, and the return for the input voltage (pin 1 to 2) and supply voltage (pin 3 to 2).
3 OUT output Output (collector) that sinks up to 100 mA, with a maximum supply voltage of 50 V from pin 3 to pin 2.

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 R1 nominal R1 4.7 kΩ DDTC143ZCA R1 (NOM) 1
Resistor R2 nominal R2 47 kΩ DDTC143ZCA R2 (NOM) 1
Input Resistor Tolerance R1 -30 30 % 3
Resistance Ratio Tolerance R2/R1 -20 20 % 3
Input Voltage (off) Vl(OFF) 0.5 V VCC = 5V, IO = 100μA 3
Input Voltage (on) Vl(ON) 1.3 V VO = 0.3V, IO = 5mA 3
Output Voltage VO(ON) 0.1 0.3 V IO/Il = 5mA/0.25mA 3
Input Current Il 1.8 mA VI = 5V 3
Output Current (off) IO(OFF) 0.5 μA VCC = 50V, VI = 0V 3
DC Current Gain Gl 80 VO = 5V, IO = 10mA 3
Supply Voltage VCC 50 V Pin 3 to 2, TA = +25°C 2
Input Voltage VIN -5 30 V Pin 1 to 2, TA = +25°C 2
Output Current IO 100 mA TA = +25°C 2
Power Dissipation PD 200 mW Note 6, TA = +25°C 2
Thermal Resistance, Junction to Ambient Air RθJA 625 C/W Note 6, TA = +25°C 2
Operating and Storage Temperature Range TJ, TSTG -55 150 C TA = +25°C 2
Gain-Bandwidth Product fT 250 MHz VCE = 10V, IE = 5mA, f = 100MHz 3

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: DDTC143ZCAQ-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ddtc143zcaq-7-f-etched.step / ddtc143zcaq-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddtc143zcaq-7-f.step / ddtc143zcaq-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (6 pp, sha256 0cc5dc96040d959d, retrieved 2026-10-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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