component
FS431M
Public Made by Adomby adom
FOSAN Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# FS431M++**FOSAN** · Voltage Reference · SOT-23++FS431M from FOSAN, 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 | REF | input | Reference input. Compared internally against the 2.495 V bandgap reference; typically driven from an external R1/R2 divider between Cathode and Anode to program the regulation voltage. Input current ~1.8 µA typ (4 µA max). |+| 2 | K | passive | Cathode. Shunt regulation terminal; sinks 1-100 mA to hold VKA at the programmed voltage (up to 40 V absolute max, 36 V programmable). Dynamic impedance 0.27 Ω typ. |+| 3 | A | passive | Anode. Common/ground return for the shunt regulator; the resistor divider low side and Vref return are referenced here. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | FOSAN |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `FS431M`+- 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:** [FOSAN datasheet](docs/fs431m-datasheet.pdf) (4 pp, sha256 `44eae1ca9d167d08`, 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/fs431m-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "fs431m",+ "version": "0.1.0",+ "type": "component",+ "description": "FOSAN Voltage Reference, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "pmic",+ "fs431m"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "fs431m.kicad_sym",+ "fs431m.kicad_mod",+ "fs431m.glb",+ "fs431m.step",+ "fs431m.lbr",+ "docs/hero.png",+ "docs/fs431m-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}