component
431S
Public Made by Adomby adom
Shenzhen Fuman Voltage Reference, SOT-23-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+38@@ -0,0 +1,38 @@+# 431S++**Shenzhen Fuman** · Voltage Reference · SOT-23-3++431S from Shenzhen Fuman, in a SOT-23-3. 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 to the internal 2.5 V bandgap comparator. Tie to the resistive divider between cathode and anode to program VKA = Vref*(1+R1/R2)+Iref*R1. Reference input current typ 0.2 µA (max 4 µA); IREF absolute range -0.05 to +10 mA. |+| 2 | A | power_in | Anode. Common ground/return terminal of the shunt regulator; the low side of the R1/R2 programming divider and the low side of the load. |+| 3 | K | power_in | Cathode. High-side terminal; sinks current from the supply through a series resistor. VKA continuous rating 40 V max, cathode current -100 to +150 mA, regulation from IK(min) ~0.05 mA up to 100 mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shenzhen Fuman |+| Package | SOT-23-3 |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `431S`+- Footprint: `Package_TO_SOT_SMD:SOT-23-3`+- 3D model: SOT-23-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shenzhen Fuman datasheet](docs/431s-datasheet.pdf) (4 pp, sha256 `89e58cf6f78a06cf`, 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/431s-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "431s",+ "version": "0.1.0",+ "type": "component",+ "description": "Shenzhen Fuman Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "pmic",+ "431s"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "431s.kicad_sym",+ "431s.kicad_mod",+ "431s.glb",+ "431s.step",+ "431s.lbr",+ "docs/hero.png",+ "docs/431s-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}