component
BC847B
Public Made by Adomby adom
Guangdong Hottech Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# BC847B++**Guangdong Hottech** · Bipolar (BJT) · SOT-23++BC847B from Guangdong Hottech, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | B | input | Base - NPN control terminal; DC current gain hFE 200-450 (BC847B) at VCE=5V, IC=2mA; base-emitter saturation voltage VBE(sat) max 1.1V at IC=100mA, IB=5mA. |+| 2 | E | passive | Emitter - NPN emitter terminal; emitter-base breakdown voltage VEBO=6V; emitter cut-off current IEBO max 0.1µA at VEB=5V, IC=0. |+| 3 | C | passive | Collector - NPN collector terminal; max collector current IC=100mA, collector-emitter breakdown voltage V(BR)CEO=45V, collector-emitter saturation voltage VCE(sat) max 0.5V at IC=100mA, IB=5mA, max power dissipation PC=200mW. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Guangdong Hottech |+| Package | SOT-23 |+| Category | Transistors/Thyristors |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `BC847B`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)+- 3D model files: `bc847b-etched.step` / `bc847b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc847b.step` / `bc847b.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Guangdong Hottech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588905238178222080) (4 pp, sha256 `11fee808a1df2158`, retrieved 2026-09-18, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-sonnet-4-6` (text+vision), consensus `claude-opus-4-7` (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/bc847b-datasheet.pdf)
page.jsonadded+114@@ -0,0 +1,114 @@+{+ "slug": "bc847b",+ "version": "0.1.0",+ "type": "component",+ "description": "Guangdong Hottech Bipolar (BJT), SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "transistors-thyristors",+ "bc847b",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bc847b.kicad_sym",+ "bc847b.kicad_mod",+ "bc847b.glb",+ "bc847b.step",+ "bc847b.lbr",+ "docs/hero.png",+ "docs/bc847b-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "BC847B",+ "manufacturer": "Guangdong Hottech",+ "package": "SOT-23",+ "pin_count": 3,+ "category": "Transistors/Thyristors",+ "subcategory": "Bipolar (BJT)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588905238178222080",+ "parts": {+ "symbol": "bc847b.kicad_sym",+ "footprint": "bc847b.kicad_mod",+ "model_3d": "bc847b-etched.glb",+ "model_3d_plain": "bc847b.glb",+ "model_3d_step": "bc847b-etched.step",+ "model_3d_step_plain": "bc847b.step",+ "lbr": "bc847b.lbr"+ },+ "distributor_links": {+ "lcsc": "C181140"+ },+ "pins": [+ {+ "number": "1",+ "name": "B",+ "type": "input",+ "description": "Base - NPN control terminal; DC current gain hFE 200-450 (BC847B) at VCE=5V, IC=2mA; base-emitter saturation voltage VBE(sat) max 1.1V at IC=100mA, IB=5mA."+ },+ {+ "number": "2",+ "name": "E",+ "type": "passive",+ "description": "Emitter - NPN emitter terminal; emitter-base breakdown voltage VEBO=6V; emitter cut-off current IEBO max 0.1µA at VEB=5V, IC=0."+ },+ {+ "number": "3",+ "name": "C",+ "type": "passive",+ "description": "Collector - NPN collector terminal; max collector current IC=100mA, collector-emitter breakdown voltage V(BR)CEO=45V, collector-emitter saturation voltage VCE(sat) max 0.5V at IC=100mA, IB=5mA, max power dissipation PC=200mW."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-sonnet-4-6",+ "primary_mode": "text+vision",+ "consensus_model": "claude-opus-4-7",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Pin-number-to-function labels on the SOT-23 package drawing (page 1, top-right) are small and partia",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 4,+ "cost_usd": 0.158,+ "at": "2026-09-18T04:09:06"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588905238178222080",+ "pages": 4,+ "sha256": "11fee808a1df2158",+ "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]"+ }+}