L78L05A from UMW, in a SO-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	OUTPUT	power_out	Regulated +5 V output (nominal 4.8-5.2 V at TJ=25 °C). Sources up to 100 mA. Requires a 0.1 µF ceramic capacitor to GND for stability and transient response.
2	GND	power_in	Common/ground reference. Return path for input current, output current, and quiescent current (~2 mA typ).
3	INPUT	power_in	Unregulated DC input, typically 7.5 V to 20 V (absolute max 35 V for VO=3.3-18 V variants). Requires a 0.33 µF ceramic input capacitor to GND close to the pin; dropout ~1.7 V above VO.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SO-8
Category	PMIC
Pins	3

CAD (KiCad official)

Symbol: L78L05A
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SO-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`l78l05a.step`	122 KB	You want the bare part, or you mark your own boards.
`l78l05a-etched.step`	1.5 MB	You want the part with `L78L05A` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 375 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: UMW datasheet (22 pp, sha256 3eeae843c9f51425, 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