component

SGM2021-3.3YN3G

Public Made by Adom

by adom

SGMICRO SGM2021 3 3YN3G TR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmicsgm2021-3.3yn3g
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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

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SGM2021-3.3YN3G

SGMICRO · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3

SGM2021-3.3YN3G from SGMICRO, 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 GND power_in Ground reference for the regulator.
2 OUT power_out Regulator output pin. Fixed 3.3V output, delivers up to 300mA. Requires a 1µF ceramic output capacitor to ground for stability.
3 IN power_in Regulator input pin. Operating input voltage range 2.5V to 5.5V. A 1µF or larger ceramic capacitor from IN to GND is recommended.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • SGM2021-0.9YN3G/TR
  • SGM2021-1.2YN3G/TR
  • SGM2021-1.3YN3G/TR
  • SGM2021-1.5YN3G/TR
  • SGM2021-1.8YN3G/TR
  • SGM2021-2.1YN3G/TR
  • SGM2021-2.5YN3G/TR
  • SGM2021-2.6YN3G/TR
  • SGM2021-2.7YN3G/TR
  • SGM2021-2.8YN3G/TR
  • SGM2021-2.85YN3G/TR
  • SGM2021-2.9YN3G/TR
  • SGM2021-3.0YN3G/TR
  • SGM2021-3.1YN3G/TR
  • SGM2021-3.2YN3G/TR
  • SGM2021-3.3YN3G/TR
  • SGM2021-3.6YN3G/TR
  • SGM2021-4.2YN3G/TR
  • SGM2021-5.0YN3G/TR

CAD (KiCad official)

  • Symbol: SGM2021-3.3YN3G
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: sgm2021-3-3yn3g-etched.step / sgm2021-3-3yn3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sgm2021-3-3yn3g.step / sgm2021-3-3yn3g.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sgm2021-3-3yn3g.step 59 KB You want the bare part, or you mark your own boards.
sgm2021-3-3yn3g-etched.step 2.6 MB You want the part with SGM2021-3.3YN3G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 623 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 (12 pp, sha256 5e3786fdc527397e, 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