L7809CV from UMW, in a TO-220. 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	I	power_in	Unregulated input voltage. Recommended Vi ≥ 11.5V for 9V output; absolute maximum 35V. Bypass with a 0.33µF ceramic capacitor to GND close to the pin for stability.
2	G	power_in	Common ground reference for input and output. In the TO-220 package this pin is electrically connected to the metal tab (heatsink).
3	O	power_out	Regulated +9V output. Sources up to 1.2A with internal current limit (typ. 0.4A short-circuit). Bypass with a 0.1µF ceramic capacitor to GND to improve transient response.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	TO-220
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

L7809CV

CAD (KiCad official)

Symbol: L7809CV
Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
3D model: TO-220 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`l7809cv.step`	83 KB	You want the bare part, or you mark your own boards.
`l7809cv-etched.step`	704 KB	You want the part with `L7809CV` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 183 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: UMW datasheet (18 pp, sha256 187ff89cc4c93f6a, 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