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DTC123EKAT146

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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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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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DTC123EKAT146

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

DTC123EKAT146 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 R2 and the common return of the inverter.
2 IN (BASE) input Base input through built-in R1 = 2.2kΩ (R2/R1 = 1.0), with VI(off) max 0.5V, VI(on) min 3.0V and VIN rating of -10 to 12V.
3 OUT (COLLECTOR) output Open-collector output of the built-in transistor, rated 50V (VCC) and 100mA maximum 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 VO(on) 100 300 mV IO = 10mA, II = 0.5mA 2
Input current II 3.8 mA VI = 5V 2
Output current IO(off) 500 nA VCC = 50V, VI = 0V 2
DC current gain GI 20 VO = 5V, IO = 20mA 2
Input resistance R1 1.54 2.2 2.86 kΩ 2
Resistance ratio R2/R1 0.8 1 1.2 2
Transition frequency fT 250 MHz VCE = 10V, IE = -5mA, f = 100MHz (characteristics of built-in transistor) 2
Supply voltage VCC 50 V Ta = 25°C 2
Input voltage VIN -10 12 V Ta = 25°C 2
Output current IO 100 mA Ta = 25°C 2
Collector current IC(MAX) 100 mA Ta = 25°C; characteristics of built-in transistor 2
Power dissipation PD 200 mW DTC123EKA, Ta = 25°C; each terminal mounted on a reference land 2
Junction temperature Tj 150 ℃ Ta = 25°C 2
Storage temperature Tstg -55 150 ℃ Ta = 25°C 2

CAD (KiCad official)

  • Symbol: DTC123EKAT146
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
  • 3D model files: dtc123ekat146-etched.step / dtc123ekat146-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dtc123ekat146.step / dtc123ekat146.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (11 pp, sha256 0b66bdd1d6edbbee, retrieved 2026-10-22, 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