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DTC124EKAT146

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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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DTC124EKAT146

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

DTC124EKAT146 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; R2 (22kΩ) is connected between this pin and the base.
2 IN (BASE) input Input (base) through built-in R1 = 22kΩ, with VI(off) max 0.5V, VI(on) min 3.0V and input voltage range -10 to 40V.
3 OUT (COLLECTOR) output Output (collector) of the digital transistor, rated VCC 50V, output current IO 30mA and collector current IC(MAX) 100mA.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package TO-236-3(SOT-23-3)
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 (VI(on)) VI(on) 3 V VO = 0.2V, IO = 5mA 2
Input voltage (VI(off)) VI(off) 0.5 V VCC = 5V, IO = 100μA 2
Output voltage VO(on) 100 300 mV IO = 10mA, II = 0.5mA 2
Input current II 360 μA VI = 5V 2
Output current IO(off) 500 nA VCC = 50V, VI = 0V 2
DC current gain GI 56 - VO = 5V, IO = 5mA 2
Input resistance R1 15.4 22 28.6 kΩ - 2
Resistance ratio R2/R1 0.8 1 1.2 - - 2
Supply voltage VCC 50 V Ta = 25°C 2
Input voltage VIN -10 40 V Ta = 25°C 2
Output current IO 30 mA Ta = 25°C 2
Collector current IC(MAX) 100 mA Ta = 25°C, footnote *1 (built-in transistor) 2
Power dissipation (DTC124EKA, SMT3/SOT-346) PD 200 mW Ta = 25°C, each terminal mounted on a reference land (footnote *2) 2
Junction temperature Tj 150 ℃ - 2
Range of storage temperature Tstg -55 150 ℃ - 2

CAD (KiCad official)

  • Symbol: DTC124EKAT146
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
  • 3D model files: dtc124ekat146-etched.step / dtc124ekat146-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dtc124ekat146.step / dtc124ekat146.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (12 pp, sha256 bb396fb428ba14b9, retrieved 2026-10-13, tier: lcsc)
  • 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