component
BC857BDW1T1G
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onsemi Bipolar (BJT), SOT-363. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+42@@ -0,0 +1,42 @@+# BC857BDW1T1G++**onsemi** · Bipolar (BJT) · SOT-363++BC857BDW1T1G from onsemi, in a SOT-363. 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 | EMITTER 2 | passive | Emitter terminal of Q2 with maximum emitter-base voltage rating of -5.0 V. |+| 2 | BASE 2 | input | Base terminal of Q2 for control of transistor conduction. |+| 3 | COLLECTOR 1 | output | Collector terminal of Q1 rated for maximum continuous current of -100 mA and collector-emitter voltage of -45 V. |+| 4 | EMITTER 1 | passive | Emitter terminal of Q1 with maximum emitter-base voltage rating of -5.0 V. |+| 5 | BASE 1 | input | Base terminal of Q1 for control of transistor conduction. |+| 6 | COLLECTOR 2 | output | Collector terminal of Q2 rated for maximum continuous current of -100 mA and collector-emitter voltage of -45 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | SOT-363 |+| Category | Transistors/Thyristors |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `BC857BDW1T1G`+- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`+- 3D model: SOT-363 (KiCad packages3D, STEP)+- 3D model files: `bc857bdw1t1g-etched.step` / `bc857bdw1t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc857bdw1t1g.step` / `bc857bdw1t1g.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586204661548662784) (7 pp, sha256 `3a5f33908380e4f2`, retrieved 2026-09-29, tier: lcsc)+- **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/bc857bdw1t1g-datasheet.pdf)
page.jsonadded+131@@ -0,0 +1,131 @@+{+ "slug": "bc857bdw1t1g",+ "version": "0.1.0",+ "type": "component",+ "description": "onsemi Bipolar (BJT), SOT-363. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "transistors-thyristors",+ "bc857bdw1t1g",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bc857bdw1t1g.kicad_sym",+ "bc857bdw1t1g.kicad_mod",+ "bc857bdw1t1g.glb",+ "bc857bdw1t1g.step",+ "bc857bdw1t1g.lbr",+ "docs/hero.png",+ "docs/bc857bdw1t1g-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "BC857BDW1T1G",+ "manufacturer": "onsemi",+ "package": "SOT-363",+ "pin_count": 6,+ "category": "Transistors/Thyristors",+ "subcategory": "Bipolar (BJT)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586204661548662784",+ "parts": {+ "symbol": "bc857bdw1t1g.kicad_sym",+ "footprint": "bc857bdw1t1g.kicad_mod",+ "model_3d": "bc857bdw1t1g-etched.glb",+ "model_3d_plain": "bc857bdw1t1g.glb",+ "model_3d_step": "bc857bdw1t1g-etched.step",+ "model_3d_step_plain": "bc857bdw1t1g.step",+ "lbr": "bc857bdw1t1g.lbr"+ },+ "distributor_links": {+ "lcsc": "C154783",+ "digikey": "BC857BDW1T1GOSTR-ND",+ "mouser": "863-BC857BDW1T1G"+ },+ "distributor_check": {+ "checked_at": "2026-09-29T15:02:52Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "BC857BDW1T1GOSTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "863-BC857BDW1T1G",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "EMITTER 2",+ "type": "passive",+ "description": "Emitter terminal of Q2 with maximum emitter-base voltage rating of -5.0 V."+ },+ {+ "number": "2",+ "name": "BASE 2",+ "type": "input",+ "description": "Base terminal of Q2 for control of transistor conduction."+ },+ {+ "number": "3",+ "name": "COLLECTOR 1",+ "type": "output",+ "description": "Collector terminal of Q1 rated for maximum continuous current of -100 mA and collector-emitter voltage of -45 V."+ },+ {+ "number": "4",+ "name": "EMITTER 1",+ "type": "passive",+ "description": "Emitter terminal of Q1 with maximum emitter-base voltage rating of -5.0 V."+ },+ {+ "number": "5",+ "name": "BASE 1",+ "type": "input",+ "description": "Base terminal of Q1 for control of transistor conduction."+ },+ {+ "number": "6",+ "name": "COLLECTOR 2",+ "type": "output",+ "description": "Collector terminal of Q2 rated for maximum continuous current of -100 mA and collector-emitter voltage of -45 V."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586204661548662784",+ "pages": 7,+ "sha256": "3a5f33908380e4f2",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 6,+ "described": 6,+ "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]"+ }+}