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DTC143XUA

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Changjing Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DTC143XUA

Changjing · Bipolar (BJT) · SOT-323

DTC143XUA from Changjing, in a SOT-323. 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 Base input of the built-in-resistor digital transistor; the datasheet gives an input voltage rating of -7 to +20 V, with VI(off) at most 0.3 V (VCC=5V, IO=100µA) and VI(on) at least 2.5 V (VO=0.3V, IO=20mA).
2 GND power_in Ground reference pin for the device.
3 OUT output Output (collector) pin, rated for output current IO up to 100 mA and supply voltage VCC up to 50 V, with IO(off) at most 0.5 µA at VCC=50 V and VI=0.

Key specifications

Parameter Value
Manufacturer Changjing
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
Input voltage (on) VI(on) 2.5 V VO=0.3V,IO=20mA 2
Input voltage (off) VI(off) 0.3 V VCC=5V,IO=100µA 2
Output voltage (on) VO(on) 0.1 0.3 V IO/II=10mA/0.5mA 2
Input current II 1.8 mA VI=5V 2
Output current (off) IO(off) 0.5 μA VCC=50V,VI=0 2
DC current gain GI 30 VO=5V,IO=10mA 2
Input resistance R1 3.29 4.7 6.11 kΩ 2
Resistance ratio R2/R1 1.7 2.1 2.6 2
Supply voltage VCC 50 V 2
Input voltage VIN -7 20 V 2
Output current IO 100 mA 2
Power dissipation (DTC143XUA, SOT-323) PD 200 mW 2
Operation junction and storage temperature range TJ,Tstg -55 150 ℃ 2

CAD (KiCad official)

  • Symbol: DTC143XUA
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: dtc143xua-etched.step / dtc143xua-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dtc143xua.step / dtc143xua.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (15 pp, sha256 c42816260b413eda, retrieved 2026-10-18, 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