ME6203A50M3G from MICRONE, 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	VSS	power_in	Ground reference for the regulator. Common return for VIN and VOUT.
3	VIN	power_in	Unregulated power input. Operating range 5.0 V to 40 V for the A50 variant (absolute max 40 V). Bypass with 10 µF ceramic/tantalum capacitor to VSS.
2	VOUT	power_out	Regulated 5.0 V output, ±2% accuracy. Sources up to 100 mA (typ 150 mA, max 180 mA for A50). Requires 10 µF ceramic/tantalum output capacitor to VSS for stability.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

ME6203A50M3G
ME6203A50M3GPG
ME6203A50M3GTG

CAD (KiCad official)

Symbol: ME6203A50M3G
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
`me6203a50m3g.step`	59 KB	You want the bare part, or you mark your own boards.
`me6203a50m3g-etched.step`	2.4 MB	You want the part with `ME6203A50M3G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 579 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: MICRONE datasheet (11 pp, sha256 4094f4d2deb5f794, 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