component
AO4805
Public Made by Adomby adom
Alpha & Omega Semiconductor FET, MOSFET Arrays, SOIC-8. KiCad symbol, footprint and 3D as used on Adom boards; pin functions from the manufacturer datasheet.
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Add component CAD, datasheet and docs (1)
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README.md+45−1@@ -1,3 +1,47 @@ # AO4805 -Alpha & Omega Semiconductor FET, MOSFET Arrays, SOIC-8. KiCad symbol, footprint and 3D as used on Adom boards; pin functions from the manufacturer datasheet.+::adom-verified{src="/adom/ao4805/render/verification.json"}++**Alpha & Omega Semiconductor** · FET, MOSFET Arrays · SOIC-8++AO4805 from Alpha & Omega Semiconductor, in a SOIC-8. Symbol, footprint and 3D model are the ones used on Adom board designs (3D model extracted from the board STEP export, seated in the footprint frame). Pin functions are extracted from the manufacturer datasheet with page references. **Staged for validation: see the open items in the verification log above.**++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | S2 | passive | Source of P-channel MOSFET #2. Connected to the source terminal of the second P-channel MOSFET die inside the dual package. [datasheet p.1] |+| 2 | G2 | input | Gate of P-channel MOSFET #2. Gate threshold voltage VGS(th) = -1.7V to -2.8V (typical -2.3V). Maximum VGS = ±25V. [datasheet p.1] |+| 3 | S1 | passive | Source of P-channel MOSFET #1. Connected to the source terminal of the first P-channel MOSFET die inside the dual package. [datasheet p.1] |+| 4 | G1 | input | Gate of P-channel MOSFET #1. Gate threshold voltage VGS(th) = -1.7V to -2.8V (typical -2.3V). Maximum VGS = ±25V. [datasheet p.1] |+| 5 | D1 | passive | Drain of P-channel MOSFET #1. Pins 5 and 6 are tied together internally for current handling and thermal performance. Drain-Source breakdown voltage BVDSS = -30V. [datasheet p.1] |+| 6 | D1 | passive | Drain of P-channel MOSFET #1. Pins 5 and 6 are tied together internally for current handling and thermal performance. Drain-Source breakdown voltage BVDSS = -30V. [datasheet p.1] |+| 7 | D2 | passive | Drain of P-channel MOSFET #2 (second drain lead). Pins 7 and 8 are tied together internally for current handling and thermal performance. [datasheet p.1] |+| 8 | D2 | passive | Drain of P-channel MOSFET #2 (second drain lead). Pins 7 and 8 are tied together internally for current handling and thermal performance. [datasheet p.1] |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Alpha & Omega Semiconductor |+| Package | SOIC-8 |+| Category | Transistors/Thyristors |+| Pins | 8 |+| LCSC | C38943 |+| Distributor summary (LCSC listing, not datasheet) | -55℃~+150℃ 18mΩ@10V 2 P-Channel 2.6nF 2.8V 2W 3.6pF 30V 39nC@10V 9A SOIC-8 MOSFETs ROHS |++## CAD++- Symbol: `ao4805` (source library `MOSFET_CDT:AO4805`)+- Footprint: `MOSFET_CDT:SOIC-8_3.9x4.9mm_P1.27mm_AO4805`+- 3D model path in footprint: `${KIPRJMOD}/ao4805.step`+- 3D files: `ao4805-etched.step` / `ao4805-etched.glb` carry the MPN etch as a separate `Adom.LaserEtch` part; `ao4805.step` / `ao4805.glb` are the bare model.+- EAGLE/Fusion library: `ao4805.lbr` (adom-lbr)++## Provenance++- **Datasheet:** [Alpha & Omega Semiconductor datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175825766977536) (sha256 `d5ab4cd887b7c167`, retrieved 2026-10-08, tier: lcsc)+- **CAD:** Footprint, symbol and 3D model as used on Adom board designs; the 3D model was extracted from the board STEP export.+- **Pins:** KiCad symbol from the source board + adom-ds2sf datasheet extraction (claude-opus-4-7).++[Datasheet PDF](docs/ao4805-datasheet.pdf)
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name="LCSC_PN" value="C38943" constant="no"/>+ </technology>+ </technologies>+ </device>+ </devices>+</deviceset>+</devicesets>+</library>+</drawing>+</eagle>
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package.jsonadded+176@@ -0,0 +1,176 @@+{+ "slug": "ao4805",+ "version": "0.1.0",+ "type": "component",+ "tags": [+ "component",+ "transistors/thyristors",+ "ao4805",+ "board-derived",+ "staged-for-validation"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "verification.json",+ "ao4805.kicad_sym",+ "ao4805.kicad_mod",+ "ao4805-etched.glb",+ "ao4805-etched.step",+ "ao4805.glb",+ "ao4805.step",+ "ao4805.lbr",+ "docs/hero.png",+ "docs/ao4805-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "AO4805",+ "manufacturer": "Alpha & Omega Semiconductor",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "Transistors/Thyristors",+ "subcategory": "FET, MOSFET Arrays",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175825766977536",+ "parts": {+ "symbol": "ao4805.kicad_sym",+ "footprint": "ao4805.kicad_mod",+ "model_3d": "ao4805-etched.glb",+ "model_3d_plain": "ao4805.glb",+ "model_3d_step": "ao4805-etched.step",+ "model_3d_step_plain": "ao4805.step",+ "lbr": "ao4805.lbr"+ },+ "distributor_links": {+ "digikey": {+ "part": "785-1055-2-ND",+ "url": "https://www.digikey.com/en/products/detail/alpha-omega-semiconductor-inc/AO4805/1855827"+ },+ "mouser": false,+ "mouser_note": "2026-10-08: no exact-MPN listing for AO4805 found via the mouser API.",+ "lcsc": {+ "part": "C38943",+ "url": "https://www.lcsc.com/product-detail/C38943.html"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "S2",+ "type": "passive",+ "description": "Source of P-channel MOSFET #2. Connected to the source terminal of the second P-channel MOSFET die inside the dual package. [datasheet p.1]"+ },+ {+ "number": "2",+ "name": "G2",+ "type": "input",+ "description": "Gate of P-channel MOSFET #2. Gate threshold voltage VGS(th) = -1.7V to -2.8V (typical -2.3V). Maximum VGS = ±25V. [datasheet p.1]"+ },+ {+ "number": "3",+ "name": "S1",+ "type": "passive",+ "description": "Source of P-channel MOSFET #1. Connected to the source terminal of the first P-channel MOSFET die inside the dual package. [datasheet p.1]"+ },+ {+ "number": "4",+ "name": "G1",+ "type": "input",+ "description": "Gate of P-channel MOSFET #1. Gate threshold voltage VGS(th) = -1.7V to -2.8V (typical -2.3V). Maximum VGS = ±25V. [datasheet p.1]"+ },+ {+ "number": "5",+ "name": "D1",+ "type": "passive",+ "description": "Drain of P-channel MOSFET #1. Pins 5 and 6 are tied together internally for current handling and thermal performance. Drain-Source breakdown voltage BVDSS = -30V. [datasheet p.1]"+ },+ {+ "number": "6",+ "name": "D1",+ "type": "passive",+ "description": "Drain of P-channel MOSFET #1. Pins 5 and 6 are tied together internally for current handling and thermal performance. Drain-Source breakdown voltage BVDSS = -30V. [datasheet p.1]"+ },+ {+ "number": "7",+ "name": "D2",+ "type": "passive",+ "description": "Drain of P-channel MOSFET #2 (second drain lead). Pins 7 and 8 are tied together internally for current handling and thermal performance. [datasheet p.1]"+ },+ {+ "number": "8",+ "name": "D2",+ "type": "passive",+ "description": "Drain of P-channel MOSFET #2 (second drain lead). Pins 7 and 8 are tied together internally for current handling and thermal performance. [datasheet p.1]"+ }+ ],+ "provenance": {+ "factory_chain": {+ "pipeline": "adom-parts (board-derived) 0.1",+ "pins": "KiCad symbol from the source board + adom-ds2sf datasheet extraction (claude-opus-4-7)",+ "at": "2026-10-08"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175825766977536",+ "pages": 5,+ "sha256": "d5ab4cd887b7c1672a7267d69cd345650440d5c5237104623195bbf4dfb5e148",+ "source_tier": "lcsc"+ },+ "cad": "Footprint, symbol and 3D model as used on Adom board designs; the 3D model was extracted from the board STEP export",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "ao4805.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin",+ "seat": "z = 0 (PCB top surface)",+ "extents_mm": [+ 6.0,+ 4.9,+ 1.6+ ],+ "zmin_mm": -0.0,+ "footprint_binding": "identity",+ "sha256": "608993a3f33302f7912e7cfcd9a65c5aab9eeefea627187b28675d34863af87c",+ "checked": "2026-10-08",+ "checked_by": "adom-parts/partstep.py (placement inverse from the source board; centroid-matched to KiCad library models on 59 reference cases)"+ },+ {+ "file": "ao4805-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin",+ "seat": "z = 0 (PCB top surface)",+ "extents_mm": [+ 6.0,+ 4.9,+ 1.602+ ],+ "zmin_mm": -0.0,+ "footprint_binding": "identity",+ "sha256": "2285910e292dde46ab16db5705e990c3f0e8e4319d3c23eb10cf7c3cb2572b3a",+ "checked": "2026-10-08",+ "checked_by": "adom-parts/partstep.py (placement inverse from the source board; centroid-matched to KiCad library models on 59 reference cases)"+ }+ ]+ },+ "description": "Alpha & Omega Semiconductor FET, MOSFET Arrays, SOIC-8. KiCad symbol, footprint and 3D as used on Adom boards; pin functions from the manufacturer datasheet."+}
verification.jsonadded+58@@ -0,0 +1,58 @@+{+ "schema": "adom/verification@1",+ "part": "AO4805",+ "variants": [],+ "entries": [+ {+ "date": "2026-10-08",+ "by": {+ "name": "Claude (AI build)",+ "handle": "claude"+ },+ "status": "open",+ "title": "Automated build checks (awaiting human validation)",+ "scope": [+ "symbol",+ "footprint",+ "3d",+ "pins"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "Footprint extracted pad-for-pad from the source board and normalized to the footprint frame (back-side parts un-mirrored)",+ "result": "pass"+ },+ {+ "text": "3D model seated z=0 at footprint origin (placement inverse; method centroid-matched to KiCad library models on 59 cases)",+ "result": "pass"+ },+ {+ "text": "adom-lbr generate + lint passed",+ "result": "pass"+ },+ {+ "text": "8 of 8 pins described from the datasheet (adom-ds2sf, page-cited)",+ "result": "pass"+ },+ {+ "text": "Not yet checked by a person: land pattern vs datasheet, pin-1/orientation, 3D body vs drawing",+ "result": "note"+ }+ ],+ "evidence": [+ {+ "label": "datasheet",+ "href": "docs/ao4805-datasheet.pdf"+ }+ ],+ "files": {+ "ao4805.kicad_sym": "b2bf7b4c0174cbe8bd23d9e68aec301263862f55e5c384718f554a049bc1c6ff",+ "ao4805.kicad_mod": "5be6a82529ce759fd0363b535bf4a2856612f5ef4a6007e670d74f5d8977a470",+ "ao4805.step": "608993a3f33302f7912e7cfcd9a65c5aab9eeefea627187b28675d34863af87c"+ }+ }+ ]+}