MC78L12ABDR2G from onsemi, in a SOIC-8. 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	VOUT	power_out	Regulated +12 V output, 100 mA capability (min 11.4 V, typ 12.0 V, max 12.6 V). Recommended 0.1 µF ceramic capacitor to GND for transient response.
2	GND	power_in	Ground return. On this internally-modified SO-8 package, pins 2, 3, 6, 7 are electrically common to the die-attach flag for improved thermal dissipation.
3	GND	power_in	Ground return. Electrically common with pins 2, 6, 7 and die-attach flag for thermal enhancement.
4	NC	unconnected	No internal connection. Leave floating or tie to GND per board layout preference.
5	NC	unconnected	No internal connection. Leave floating or tie to GND per board layout preference.
6	GND	power_in	Ground return. Electrically common with pins 2, 3, 7 and die-attach flag for thermal enhancement.
7	GND	power_in	Ground return. Electrically common with pins 2, 3, 6 and die-attach flag for thermal enhancement.
8	VIN	power_in	Unregulated positive supply input. Operating range typically 14.5-27 V for the 12 V variant; absolute maximum 35 V. Requires 0.33 µF input capacitor if placed appreciable distance from supply filter.

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	SOIC-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

MC78L12ABDR2G
MC78L12ACDR2G
MC78L12ABPG
MC78L12ACPG

CAD (KiCad official)

Symbol: MC78L12ABDR2G
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mc78l12abdr2g.step`	122 KB	You want the bare part, or you mark your own boards.
`mc78l12abdr2g-etched.step`	2.5 MB	You want the part with `MC78L12ABDR2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 625 faces against 147 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: onsemi datasheet (19 pp, sha256 6ff9a93de09c52e0, 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