L7812CV-DG from STMicroelectronics, 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	INPUT	power_in	Unregulated DC input (V_I). Accepts up to 35 V absolute maximum for the 12 V output variant. A 0.33 uF ceramic capacitor to GND close to the pin is recommended for stability.
2	GROUND	power_in	Common ground / reference return. Electrically connected to the TO-220 metal tab; carries the quiescent current that flows out of the ground pin (I_Q is not part of the load current path).
3	OUTPUT	power_out	Regulated +12 V output, up to 1.5 A with adequate heat-sinking. A 0.1 uF ceramic capacitor to GND is recommended to improve transient response.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

L7812CV-DG
L7812CP
L7812CD2T-TR

CAD (KiCad official)

Symbol: L7812CV-DG
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
`l7812cv-dg.step`	83 KB	You want the bare part, or you mark your own boards.
`l7812cv-dg-etched.step`	787 KB	You want the part with `L7812CV-DG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 210 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: STMicroelectronics datasheet (58 pp, sha256 6c86513636f2d6c9, retrieved 2026-08-17, tier: manufacturer)
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