ME6239A50PG from MICRONE, in a SOT-89-3. 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 LDO. Connect to system ground; on SOT89-3 this pin is also the thermal tab (large center pad) providing heat dissipation for the ~500mW package rating.
2	VIN	power_in	Regulator input supply. Accepts 5.0V to 30V (for the A50 5.0V option). A 10uF input capacitor (ceramic X5R/X7R for VIN<=15V, electrolytic/tantalum recommended for VIN>15V to suppress >40V spikes) should be placed close to the pin.
3	VOUT	power_out	Regulated 5.0V output (±1%), 250mA capable with VIN = VOUT + 1.5V. Requires ~10uF output capacitor; short-circuit current typ. 42mA. Dropout typ. 190mV at 50mA / 380mV at 100mA.

Key specifications

Parameter	Value
Manufacturer	MICRONE
Package	SOT-89-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

ME6239A50PG
ME6239A50PGM3G

CAD (KiCad official)

Symbol: ME6239A50PG
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`me6239a50pg.step`	57 KB	You want the bare part, or you mark your own boards.
`me6239a50pg-etched.step`	1.8 MB	You want the part with `ME6239A50PG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 462 faces against 42 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 (10 pp, sha256 2491f6d415f2d618, 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