component
KN4401S-RTK
Public Made by Adomby adom
KEC Semicon Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownKN4401S-RTK
KEC Semicon · Bipolar (BJT) · SOT-23
KN4401S-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 | EMITTER | passive | Emitter terminal of the NPN transistor; the emitter-base voltage is limited to 6 V (VEBO) and the collector current to 600 mA. |
| 2 | BASE | passive | Base terminal of the NPN transistor; base-emitter voltage is specified with VBE(sat) of 0.75 to 0.95 V at IC=150 mA, IB=15 mA and up to 1.2 V at IC=500 mA, IB=50 mA. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor; the collector-emitter voltage is limited to 40 V (VCEO) and the collector power dissipation to 350 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
KN4401S-RTK - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
kn4401s-rtk-etched.step/kn4401s-rtk-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kn4401s-rtk.step/kn4401s-rtk.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEC Semicon datasheet (3 pp, sha256
c79eb053b02a8348, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).