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BAS20W
Public Made by Adomby adom
ST Semtech Switching Diodes, SOT-323. 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
markdownBAS20W
ST Semtech · Switching Diodes · SOT-323
BAS20W from ST Semtech, 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 | A | passive | Anode of the single diode (BAS19W/BAS20W/BAS21W share this pinout); BAS20W is rated for 200 V reverse voltage and 200 mA continuous forward current. |
| 2 | NC | unconnected | Not connected internally on the single-diode BAS20W; no diode terminal is drawn at pin 2 in the package diagram. |
| 3 | K | passive | Cathode of the single diode; BAS20W reverse breakdown is 200 V minimum at IR = 100 µA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| Package | SOT-323 |
| Category | Diodes |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
BAS20W - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
bas20w-etched.step/bas20w-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bas20w.step/bas20w.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ST Semtech datasheet (4 pp, sha256
63c87ed3a90e2cce, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).