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Contents

README

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RS809-2.93YSF3

Jiangsu RUNIC Tech · Supervisor and Reset ICs · SOT-23

RS809-2.93YSF3 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 GND power_in Ground, reference for all signals. Connect to system 0V.
2 RESET output Active-low, push-pull reset output. Remains low while VCC is below the 2.93V reset threshold and for at least 200ms (typ) after VCC rises above the threshold. Output high level 0.7×VCC at ISOURCE = 500µA; output low level 0.4V max at ISINK = 1.2mA.
3 VCC power_in Power supply voltage that is monitored. Operating range 1.0V to 5.5V; absolute maximum 6.0V. Supply current 40µA (max). This pin is both the device power rail and the monitored input.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • RS809-2.93YSF3

CAD (KiCad official)

  • Symbol: RS809-2.93YSF3
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: rs809-2-93ysf3-etched.step / rs809-2-93ysf3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs809-2-93ysf3.step / rs809-2-93ysf3.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
rs809-2-93ysf3.step 59 KB You want the bare part, or you mark your own boards.
rs809-2-93ysf3-etched.step 2.8 MB You want the part with RS809-2.93YSF3 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 659 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Jiangsu RUNIC Tech datasheet (14 pp, sha256 a76870b564048c23, 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