component

2N5551S-RTK

Public Made by Adom

by adom

KEC Semicon Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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2n5551s-rtk-etched.step 2n5551s-rtk: factory component page (tier=lcsc) · Ray 15d ago
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2N5551S-RTK

KEC Semicon · Bipolar (BJT) · SOT-23

2N5551S-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 NPN emitter terminal; the datasheet rates emitter-base voltage VEBO at 6 V maximum and emitter-base breakdown V(BR)EBO at 6 V minimum.
2 BASE passive NPN base terminal; base current is rated at 100 mA maximum, and VBE(sat) is at most 1.0 V at IC=50 mA, IB=5 mA.
3 COLLECTOR passive NPN collector terminal; ratings are VCBO 180 V, VCEO 160 V, and collector current IC 600 mA, with collector power dissipation PC 350 mW when the package is mounted on 99.5% alumina.

Key specifications

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

CAD (KiCad official)

  • Symbol: 2N5551S-RTK
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: 2n5551s-rtk-etched.step / 2n5551s-rtk-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2n5551s-rtk.step / 2n5551s-rtk.glb are the bare package body.

Provenance

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

  • Datasheet: KEC Semicon datasheet (3 pp, sha256 39406473fae30a16, 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