component
RS431AYSF3
Public Unreviewedby Ray
Jiangsu RUNIC Tech Voltage Reference, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRS431AYSF3
Jiangsu RUNIC Tech · Voltage Reference · SOT-23
RS431AYSF3 from Jiangsu RUNIC Tech, 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 | CATHODE | input | Shunt current/voltage input. Sinks 0.5 mA to 100 mA when regulating; withstands up to 36V (37V abs max) relative to the anode. |
| 2 | REF | input | Reference / feedback input. Regulator drives the cathode to hold this pin at VREF (~2.5V typical) relative to the anode. Input current typ. 1.5 uA (4 uA max). |
| 3 | ANODE | power_in | Common pin, normally connected to ground. All voltages are referenced to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
RS431AYSF3RS431AYSF3BYSF3
CAD (KiCad official)
- Symbol:
RS431AYSF3 - 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: Jiangsu RUNIC Tech datasheet (9 pp, sha256
8f8161e218eaee64, 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).