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KRC103S-RTK

Public Made by Adom

by adom

KEC Semicon Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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KRC103S-RTK

KEC Semicon · Digital Transistors · SOT-23

KRC103S-RTK from KEC Semicon, in a SOT-23. 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 COMMON (EMITTER) passive Common emitter terminal of the built-in bias-resistor NPN transistor, shared between the input and output circuits. The datasheet states no separate voltage or current limit for this pin.
2 IN (BASE) input Input (base) terminal that drives the transistor through the built-in input resistor R1 (22 kΩ for KRC103S); the KRC103S input voltage rating is 40 V to -10 V.
3 OUT (COLLECTOR) output Output (collector) terminal with a maximum output voltage of 50 V and a maximum output current of 100 mA.

Key specifications

Parameter Value
Manufacturer KEC Semicon
Package SOT-23
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: KRC103S-RTK
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: krc103s-rtk-etched.step / krc103s-rtk-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); krc103s-rtk.step / krc103s-rtk.glb are the bare package body.

Provenance

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

  • Datasheet: KEC Semicon datasheet (6 pp, sha256 e179271df0e53b9c, retrieved 2026-10-09, 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