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DDTC143XE-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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DDTC143XE-7-F

Diodes Incorporated · Digital Transistors · SOT-523

DDTC143XE-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 (base side via R1) of the pre-biased NPN transistor; input voltage to GND (pin 2) rated -7 to +20 V for DDTC143XE.
2 GND power_in Ground (0) / emitter terminal; reference for supply voltage (VCC 50 V max, pin 3 to pin 2) and input voltage.
3 OUT output Output (collector) of the NPN transistor; output current up to 100 mA and VCC 50 V max for DDTC143XE.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-523
Category Triode/MOS Tube/Transistor
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
Supply Voltage VCC 50 V (3) to (2), TA = 25°C 1
Input Voltage VIN -7 20 V (1) to (2), TA = 25°C 1
Output Current IO 100 mA TA = 25°C 1
Output Current All IC (Max) IC 100 mA 1
Power Dissipation Pd 150 mW TA = 25°C 2
Thermal Resistance, Junction to Ambient Air RθJA 833 °C/W Note 1, FR4 PC board with recommended pad layout 2
Operating and Storage Temperature Range Tj, TSTG -55 150 °C 2
Input Voltage (off) Vl(off) 0.3 V VCC = 5V, IO = 100μA 2
Input Voltage (on) Vl(on) 2.5 V VO = 0.3V, IO = 20mA 2
Output Voltage VO(on) 0.1 0.3 V IO/Il = 10mA/0.5mA 2
Input Current Il 1.8 mA VI = 5V 2
Output Current (off) IO(off) 0.5 μA VCC = 50V, VI = 0V 2
DC Current Gain Gl 30 VO = 5V, IO = 10mA 2
Input Resistor Tolerance ΔR1 -30 30 % 2
Resistance Ratio Tolerance ΔR2/R1 -20 20 % 2
Gain-Bandwidth Product fT 250 MHz VCE = 10V, IE = 5mA, f = 100MHz; for reference only 2
Input Resistor R1 (nominal) R1 4.7 KΩ NOM 1
Resistor R2 (nominal) R2 10 KΩ NOM 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: Solderable per MIL-STD-202, Method 208 • Lead Free Plating (Matte Tin Finish annealed over Alloy 42 1

CAD (KiCad official)

  • Symbol: DDTC143XE-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: ddtc143xe-7-f-etched.step / ddtc143xe-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddtc143xe-7-f.step / ddtc143xe-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (4 pp, sha256 d2661de44cd9b2e1, retrieved 2026-10-22, 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