AP2111H-3.3TRG1 from Diodes Incorporated, in a SOT-223. 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. Also serves as the thermal tab on SOT-223; should be connected to a copper pour for heat dissipation.
2	VOUT	power_out	Regulated 3.3V output, capable of sourcing 600mA continuous. Requires ≥1.0µF ceramic/tantalum/aluminum-electrolytic output capacitor for stability.
3	VIN	power_in	Input supply voltage, 2.5V to 6.0V recommended (6.5V absolute max). Bypass with a low-ESR capacitor close to the pin.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-223
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

AP2111H-3.3TRG1
AP2111HA-3.3TRG1
AP2111M-3.3G1
AP2111M-3.3TRG1
AP2111MP-3.3G1
AP2111MP-3.3TRG1
AP2111K-1.5TRG1
AP2111K-ADJG1
AP2111K-ADJTRG1

CAD (KiCad official)

Symbol: AP2111H-3.3TRG1
Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
3D model: SOT-223 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ap2111h-3-3trg1.step`	64 KB	You want the bare part, or you mark your own boards.
`ap2111h-3-3trg1-etched.step`	2.2 MB	You want the part with `AP2111H-3.3TRG1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 561 faces against 75 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: Diodes Incorporated datasheet (24 pp, sha256 4c3d6fe72f078408, 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