L78L05ACD13TR from STMicroelectronics, in a SOIC-8. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	VOUT	power_out	Regulated +5 V output. Delivers up to 100 mA. A 0.1 µF ceramic capacitor to GND is recommended for output stability and transient response.
2	GND	power_in	Ground return. Pins 2, 3, 6 and 7 are internally connected to the die-attach flag for enhanced thermal dissipation and must all be tied to the PCB ground plane.
3	GND	power_in	Ground return, internally commoned with pins 2, 6, 7 and the die-attach flag for thermal dissipation.
4	NC	unconnected	No internal connection. Leave floating or tie to GND at the user's discretion.
5	NC	unconnected	No internal connection. Leave floating or tie to GND at the user's discretion.
6	GND	power_in	Ground return, internally commoned with pins 2, 3, 7 and the die-attach flag for thermal dissipation.
7	GND	power_in	Ground return, internally commoned with pins 2, 3, 6 and the die-attach flag for thermal dissipation.
8	VIN	power_in	Unregulated DC input. Absolute maximum 30 V for the 5 V variant (VO = 3.3 to 9 V range, Table 1). A 0.33 µF ceramic capacitor to GND close to the pin is recommended when the regulator is located far from the input filter.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

L78L05ACD13TRD
L78L05ACD13TR
L78L05ACD13TRZ
L78L05ACD13TRAZ
L78L05ACD13TRU

CAD (KiCad official)

Symbol: L78L05ACD13TR
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
`l78l05acd13tr.step`	122 KB	You want the bare part, or you mark your own boards.
`l78l05acd13tr-etched.step`	2.4 MB	You want the part with `L78L05ACD13TR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 601 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 (47 pp, sha256 385835a89181b63c, 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