component
BF550
Public Made by Adomby adom
Nexperia Bipolar (BJT), SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# BF550++**Nexperia** · Bipolar (BJT) · SOT-23++BF550 from Nexperia, 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 terminal of the PNP BJT. Controls collector current via VBE (typ. -750 mV at IC = -1 mA, VCE = -10 V). Emitter-base breakdown VEBO = -4 V (open collector). |+| 2 | E | passive | Emitter terminal of the PNP BJT. Common reference for VBE and VCE. Emitter cut-off current IEBO max -100 nA at VEB = -3 V. |+| 3 | C | passive | Collector terminal of the PNP BJT. VCBO = -40 V (open emitter), VCEO = -40 V (open base), IC (DC) max -25 mA, total power dissipation 250 mW at Tamb <= 25 C. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Nexperia |+| Package | SOT-23 |+| Category | Transistors/Thyristors |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `BF550`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588913513767047168) (7 pp, sha256 `17214ceb4de5cd8d`, retrieved 2026-08-17, 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/bf550-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "bf550",+ "version": "0.1.0",+ "type": "component",+ "description": "Nexperia Bipolar (BJT), SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "transistors-thyristors",+ "bf550"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bf550.kicad_sym",+ "bf550.kicad_mod",+ "bf550.glb",+ "bf550.step",+ "bf550.lbr",+ "docs/hero.png",+ "docs/bf550-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}