component

DTC143EKAT146

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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DTC143EKAT146

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

DTC143EKAT146 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 of the built-in NPN transistor, connected to the R2 bias resistor.
2 IN (BASE) input Input/base through built-in R1 = 4.7kΩ, with input voltage range -10 to 30 V, VI(off) max 0.5 V and VI(on) min 3.0 V.
3 OUT (COLLECTOR) output Output/collector of the built-in NPN transistor, rated 50 V supply (VCC) and 100 mA output current.

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) 0.5 V VCC = 5V, IO = 100μA 2
Input voltage (on) VI(on) 3 V VO = 0.3V, IO = 20mA 2
Output voltage (on) VO(on) 100 300 mV IO / II = 10mA / 0.5mA 2
Input current II 1.8 mA VI = 5V 2
Output current (off) IO(off) 500 nA VCC = 50V, VI = 0V 2
DC current gain GI 30 - VO = 5V, IO = 10mA 2
Input resistance (built-in R1) R1 3.29 4.7 6.11 kΩ 2
Resistance ratio (R2/R1) R2/R1 0.8 1 1.2 - 2
Supply voltage VCC 50 V 2
Input voltage VIN -10 30 V 2
Output current IO 100 mA 2
Collector current IC(MAX) 100 mA 2
Power dissipation PD 200 mW DTC143EKA (SMT3) row; each terminal mounted on a reference land 2
Junction temperature Tj 150 ℃ 2
Range of storage temperature Tstg -55 150 ℃ 2

CAD (KiCad official)

  • Symbol: DTC143EKAT146
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
  • 3D model files: dtc143ekat146-etched.step / dtc143ekat146-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dtc143ekat146.step / dtc143ekat146.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (12 pp, sha256 1888535a91ad90c6, retrieved 2026-10-21, 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