component
BU931P
Public Made by Adomby adom
STMicroelectronics Darlington Transistors, TO-247-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# BU931P++**STMicroelectronics** · Darlington Transistors · TO-247-3++BU931P from STMicroelectronics, in a TO-247-3. 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 | B | input | Base of the NPN Darlington; absolute maximum IB 1 A (IBM 5 A peak) and VEBO 5 V. |+| 2 | C | passive | Collector, also connected to the TAB; VCEO 400 V, VCES 500 V, IC 15 A (ICM 30 A peak). |+| 3 | E | passive | Emitter of the Darlington, with the internal collector-emitter diode connected across C and E. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-247-3 |+| Category | Transistors/Thyristors |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `BU931P`+- Footprint: `Package_TO_SOT_THT:TO-247-3_Vertical`+- 3D model: TO-247-3 (KiCad packages3D, STEP)+- 3D model files: `bu931p-etched.step` / `bu931p-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bu931p.step` / `bu931p.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/bu931p.pdf) (11 pp, sha256 `d944d69c618e8ecb`, retrieved 2026-10-05, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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](docs/bu931p-datasheet.pdf)
page.jsonadded+131@@ -0,0 +1,131 @@+{+ "slug": "bu931p",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics Darlington Transistors, TO-247-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "transistors-thyristors",+ "bu931p",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bu931p.kicad_sym",+ "bu931p.kicad_mod",+ "bu931p.glb",+ "bu931p.step",+ "bu931p.lbr",+ "docs/hero.png",+ "docs/bu931p-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "bu931p-hero.glb",+ "bu931p-hero.overlay.json"+ ],+ "component": {+ "mpn": "BU931P",+ "manufacturer": "STMicroelectronics",+ "package": "TO-247-3",+ "pin_count": 3,+ "category": "Transistors/Thyristors",+ "subcategory": "Darlington Transistors",+ "datasheet": "https://www.st.com/resource/en/datasheet/bu931p.pdf",+ "parts": {+ "symbol": "bu931p.kicad_sym",+ "footprint": "bu931p.kicad_mod",+ "model_3d": "bu931p-hero.glb",+ "model_3d_plain": "bu931p.glb",+ "model_3d_step": "bu931p-etched.step",+ "model_3d_step_plain": "bu931p.step",+ "lbr": "bu931p.lbr"+ },+ "distributor_links": {+ "lcsc": 2922669,+ "digikey": "497-3128-5-ND",+ "mouser": "511-BU931P"+ },+ "distributor_check": {+ "checked_at": "2026-10-05T19:17:47Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-3128-5-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "511-BU931P",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "B",+ "type": "input",+ "description": "Base of the NPN Darlington; absolute maximum IB 1 A (IBM 5 A peak) and VEBO 5 V."+ },+ {+ "number": "2",+ "name": "C",+ "type": "passive",+ "description": "Collector, also connected to the TAB; VCEO 400 V, VCES 500 V, IC 15 A (ICM 30 A peak)."+ },+ {+ "number": "3",+ "name": "E",+ "type": "passive",+ "description": "Emitter of the Darlington, with the internal collector-emitter diode connected across C and E."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Standard TO-247 transistor pinout (Pin 1 = Collector, Pin 2 = Base, Pin 3 = Emitter) is inferred fro"+ ],+ "pages_sent": 11,+ "cost_usd": 0.1405,+ "at": "2026-10-05T19:17:34"+ },+ "datasheet": {+ "url": "https://www.st.com/resource/en/datasheet/bu931p.pdf",+ "pages": 11,+ "sha256": "d944d69c618e8ecb",+ "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]"+ }+}