L78L05ABD13TR from STMicroelectronics, 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 5 V output (4.6 V min / 5.4 V max at TJ=25 °C). Up to 100 mA with adequate heat-sinking. Recommend 0.1 µF ceramic to GND for stability.
2	GND	power_in	Ground reference. On the SO-8 package pins 2, 3, 6 and 7 are internally commoned to the die attach flag to lower thermal resistance; tie all four to the ground plane for best heat spreading.
3	GND	power_in	Ground reference. Internally commoned with pins 2, 6 and 7 to the die attach flag for thermal spreading; connect all four to the ground plane.
4	NC	unconnected	Not connected. Leave floating or tie to ground; no internal bond.
5	NC	unconnected	Not connected. Leave floating or tie to ground; no internal bond.
6	GND	power_in	Ground reference. Internally commoned with pins 2, 3 and 7 to the die attach flag for thermal spreading; connect all four to the ground plane.
7	GND	power_in	Ground reference. Internally commoned with pins 2, 3 and 6 to the die attach flag for thermal spreading; connect all four to the ground plane.
8	VIN	power_in	Unregulated DC input. Absolute maximum 30 V for the 5 V output variant; typical dropout ~2 V so VIN ≥ ~7 V for full 5 V regulation. Recommend 0.33 µF ceramic to GND close to the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

L78L05ABD13TRD
L78L05ABD13TR
L78L05ABD13TRZ
L78L05ABD13TRAP
L78L05ABD13TRZAP

CAD (KiCad official)

Symbol: L78L05ABD13TR
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
`l78l05abd13tr.step`	122 KB	You want the bare part, or you mark your own boards.
`l78l05abd13tr-etched.step`	2.5 MB	You want the part with `L78L05ABD13TR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 617 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: STMicroelectronics datasheet (45 pp, sha256 43922ae159face7e, 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