component
BD242B
Public Made by Adomby adom
STMicroelectronics Bipolar (BJT), TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# BD242B++**STMicroelectronics** · Bipolar (BJT) · TO-220++BD242B from STMicroelectronics, in a TO-220. 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 terminal of the PNP power transistor; base current IB is rated up to 1 A (absolute maximum). |+| 2 | C | passive | Collector terminal; collector current IC rated 3 A continuous (5 A peak), with collector-emitter voltage VCEO up to 80 V for the B-suffix device. |+| 3 | E | passive | Emitter terminal; emitter-base voltage VEBO rated up to 5 V (IC = 0). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-220 |+| Category | Transistors/Thyristors |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `BD242B`+- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`+- 3D model: TO-220 (KiCad packages3D, STEP)+- 3D model files: `bd242b-etched.step` / `bd242b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bd242b.step` / `bd242b.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603168093128568832) (4 pp, sha256 `543298da312a9c51`, retrieved 2026-09-24, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-sonnet-5` (text+vision), consensus `claude-opus-4-8` (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/bd242b-datasheet.pdf)
page.jsonadded+114@@ -0,0 +1,114 @@+{+ "slug": "bd242b",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics Bipolar (BJT), TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "transistors-thyristors",+ "bd242b",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bd242b.kicad_sym",+ "bd242b.kicad_mod",+ "bd242b.glb",+ "bd242b.step",+ "bd242b.lbr",+ "docs/hero.png",+ "docs/bd242b-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "BD242B",+ "manufacturer": "STMicroelectronics",+ "package": "TO-220",+ "pin_count": 3,+ "category": "Transistors/Thyristors",+ "subcategory": "Bipolar (BJT)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603168093128568832",+ "parts": {+ "symbol": "bd242b.kicad_sym",+ "footprint": "bd242b.kicad_mod",+ "model_3d": "bd242b-etched.glb",+ "model_3d_plain": "bd242b.glb",+ "model_3d_step": "bd242b-etched.step",+ "model_3d_step_plain": "bd242b.step",+ "lbr": "bd242b.lbr"+ },+ "distributor_links": {+ "lcsc": "C5456156"+ },+ "pins": [+ {+ "number": "1",+ "name": "B",+ "type": "input",+ "description": "Base terminal of the PNP power transistor; base current IB is rated up to 1 A (absolute maximum)."+ },+ {+ "number": "2",+ "name": "C",+ "type": "passive",+ "description": "Collector terminal; collector current IC rated 3 A continuous (5 A peak), with collector-emitter voltage VCEO up to 80 V for the B-suffix device."+ },+ {+ "number": "3",+ "name": "E",+ "type": "passive",+ "description": "Emitter terminal; emitter-base voltage VEBO rated up to 5 V (IC = 0)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-sonnet-5",+ "primary_mode": "text+vision",+ "consensus_model": "claude-opus-4-8",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The metal mounting tab of the TO-220 package is internally connected to the collector on many simila",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 4,+ "cost_usd": 0.1208,+ "at": "2026-09-24T08:36:44"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603168093128568832",+ "pages": 4,+ "sha256": "543298da312a9c51",+ "source_tier": "lcsc"+ },+ "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]"+ }+}