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DTA143XKAT146

Public Made by Adom

by adom

ROHM Semicon Digital Transistors, TO-236-3(SOT-23-3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DTA143XKAT146

ROHM Semicon · Digital Transistors · TO-236-3(SOT-23-3)

DTA143XKAT146 from ROHM Semicon, in a TO-236-3(SOT-23-3). 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 GND (EMITTER) power_in Ground/emitter (positive reference for the PNP) pin, connected to the built-in R2 resistor (10kΩ) and the emitter of the transistor.
2 IN (BASE) input Input/base pin in series with built-in R1 (4.7kΩ), with input voltage rated -20 to 7 V, VI(off) max -0.3 V and VI(on) min -2.5 V.
3 OUT (COLLECTOR) output Output/collector pin rated to VCC -50 V and IO -100 mA, with VO(on) max -300 mV at IO = -10 mA.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package TO-236-3(SOT-23-3)
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 voltage (off) VI(off) -0.3 V VCC = -5V, IO = -100μA 2
Input voltage (on) VI(on) -2.5 V VO = -0.3V, IO = -20mA 2
Output voltage VO(on) -100 -300 mV IO = -10mA, II = -0.5mA 2
Input current II -1.8 mA VI = -5V 2
Output current IO(off) -500 nA VCC = -50V, VI = 0V 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 -20 7 V 2
Output current IO -100 mA 2
Collector current IC(MAX) -100 mA Built-in transistor characteristic (footnote *1) 2
Power dissipation PD 200 mW DTA143XKA row; each terminal mounted on a reference land (footnote *2) 2
Junction temperature Tj 150 ℃ 2
Range of storage temperature Tstg -55 150 ℃ 2
Transition frequency fT 250 MHz VCE = -10V, IE = 5mA, f = 100MHz (built-in transistor) 2

CAD (KiCad official)

  • Symbol: DTA143XKAT146
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
  • 3D model files: dta143xkat146-etched.step / dta143xkat146-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dta143xkat146.step / dta143xkat146.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (14 pp, sha256 427dc14e89b8e4c2, retrieved 2026-10-29, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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