KIA7805API-U from KEC Semicon, in a TO-220F-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	INPUT	power_in	Unregulated positive input supply. For the 5V variant (KIA7805) VIN max is 35V; recommended operating VIN 7.0V to 25V. Dropout voltage ~2.0V at IOUT=1A.
2	GND	power_in	Common ground reference for input and output. Also the thermal path - tab is electrically isolated on TO-220IS (fully-molded / isolated variant).
3	OUTPUT	power_out	Regulated +5V output (typ 5.0V, 4.8V-5.2V at IOUT=100mA, Tj=25°C). Short-circuit current limit ~1.6A. Compatible with MLCC, tantalum, and low-ESR electrolytic output capacitors.

Key specifications

Parameter	Value
Manufacturer	KEC Semicon
Package	TO-220F-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

KIA7805API-U
KIA7805API-UAF

CAD (KiCad official)

Symbol: KIA7805API-U
Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
3D model: TO-220F-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`kia7805api-u.step`	83 KB	You want the bare part, or you mark your own boards.
`kia7805api-u-etched.step`	962 KB	You want the part with `KIA7805API-U` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 259 faces against 48 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: KEC Semicon datasheet (20 pp, sha256 edd644632a33a22d, 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