component

BAS21SW

Public Made by Adom

by adom

YFW Switching Diodes, SOT-323. 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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docs Publish 0.1.0 · Ray 9d ago
viewers bas21sw: viewers · Ray 9d ago
bas21sw-etched.glb Publish 0.1.0 · Ray 9d ago
bas21sw-etched.step bas21sw: factory component page (tier=lcsc) · Ray 9d ago
bas21sw-hero.glb bas21sw: hero GLB from the etched model (keeps the MPN mark) · Ray 9d ago
bas21sw-hero.overlay.json Publish 0.1.0 · Ray 9d ago
bas21sw.glb Publish 0.1.0 · Ray 9d ago
bas21sw.kicad_mod Publish 0.1.0 · Ray 9d ago
bas21sw.kicad_sym Publish 0.1.0 · Ray 9d ago
bas21sw.lbr Publish 0.1.0 · Ray 9d ago
bas21sw.step Publish 0.1.0 · Ray 9d ago
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BAS21SW

YFW · Switching Diodes · SOT-323

BAS21SW from YFW, in a SOT-323. 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 A1 passive Anode of the first diode of the series pair in the BAS21SW dual high-voltage switching diode (BAS21W type: VR 250 V, IF(AV) 200 mA).
2 K2 passive Cathode of the second diode of the series pair in the BAS21SW dual high-voltage switching diode (VR 250 V, IF(AV) 200 mA per diode).
3 K1/A2 passive Common junction node between the cathode of the first diode and the anode of the second diode (series connection), shown as the top pin of the package.

Key specifications

Parameter Value
Manufacturer YFW
Package SOT-323
Category Diodes
Pins 3

CAD (KiCad official)

  • Symbol: BAS21SW
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: bas21sw-etched.step / bas21sw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bas21sw.step / bas21sw.glb are the bare package body.

Provenance

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

  • Datasheet: YFW datasheet (3 pp, sha256 93f6cc869491e66a, retrieved 2026-10-18, 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