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SGM809-SXN3L

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by Ray

SGMICRO Supervisor and Reset ICs, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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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Contents

README

markdown

SGM809-SXN3L

SGMICRO · Supervisor and Reset ICs · SOT-23

SGM809-SXN3L from SGMICRO, 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 the supervisor. Connect to system ground.
2 RESET output Active-low, push-pull reset output (RESET-bar). Held low while VCC is below the reset threshold (2.93V typ for the -S option) and for 240ms (typ) after VCC rises back above the threshold. Push-pull driver on SGM809 (no external pull-up required). Output remains valid down to VCC = 1V.
3 VCC power_in Monitored supply input. Operating range 1.2V to 5.5V (-40°C to +125°C); absolute max -0.3V to 6V. Bypass with 0.1µF to 4.7µF to GND and, for noisy supplies, add a 0Ω-1kΩ series resistor per Figure 3.

Key specifications

Parameter Value
Manufacturer SGMICRO
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • SGM809-SXN3L

CAD (KiCad official)

  • Symbol: SGM809-SXN3L
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sgm809-sxn3l.step 59 KB You want the bare part, or you mark your own boards.
sgm809-sxn3l-etched.step 2.4 MB You want the part with SGM809-SXN3L already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 558 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: SGMICRO datasheet (13 pp, sha256 3ba33d0874d62803, 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