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BAS40-04
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Nexperia Schottky Diodes, SOT-23. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# BAS40-04++**Nexperia** · Schottky Diodes · SOT-23++BAS40-04 from Nexperia, 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 | A1 | passive | Anode of diode 1. |+| 2 | K2 | passive | Cathode of diode 2. |+| 3 | K1; A2 | passive | Cathode of diode 1; anode of diode 2. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Nexperia |+| Package | SOT-23 |+| Category | Diodes |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `BAS40-04`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)+- 3D model files: `bas40-04-etched.step` / `bas40-04-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bas40-04.step` / `bas40-04.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/BAS40-04.pdf) (8 pp, sha256 `aa74539af70abd4c`, retrieved 2026-09-29, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/bas40-04-datasheet.pdf)
page.jsonadded+113@@ -0,0 +1,113 @@+{+ "slug": "bas40-04",+ "version": "0.1.0",+ "type": "component",+ "description": "Nexperia Schottky Diodes, SOT-23. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "diodes",+ "bas40-04",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bas40-04.kicad_sym",+ "bas40-04.kicad_mod",+ "bas40-04.glb",+ "bas40-04.step",+ "bas40-04.lbr",+ "docs/hero.png",+ "docs/bas40-04-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "BAS40-04",+ "manufacturer": "Nexperia",+ "package": "SOT-23",+ "pin_count": 3,+ "category": "Diodes",+ "subcategory": "Schottky Diodes",+ "datasheet": "https://assets.nexperia.com/documents/data-sheet/BAS40-04.pdf",+ "parts": {+ "symbol": "bas40-04.kicad_sym",+ "footprint": "bas40-04.kicad_mod",+ "model_3d": "bas40-04-etched.glb",+ "model_3d_plain": "bas40-04.glb",+ "model_3d_step": "bas40-04-etched.step",+ "model_3d_step_plain": "bas40-04.step",+ "lbr": "bas40-04.lbr"+ },+ "distributor_links": {+ "lcsc": "C255581",+ "digikey": "4878-BAS40-04TR-ND",+ "mouser": "637-BAS40-04"+ },+ "distributor_check": {+ "checked_at": "2026-09-29T17:37:06Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "4878-BAS40-04TR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "637-BAS40-04",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "A1",+ "type": "passive",+ "description": "Anode of diode 1."+ },+ {+ "number": "2",+ "name": "K2",+ "type": "passive",+ "description": "Cathode of diode 2."+ },+ {+ "number": "3",+ "name": "K1; A2",+ "type": "passive",+ "description": "Cathode of diode 1; anode of diode 2."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://assets.nexperia.com/documents/data-sheet/BAS40-04.pdf",+ "pages": 8,+ "sha256": "aa74539af70abd4c",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 3,+ "described": 3,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}