78L08 from UMW, in a SOT-89-3. 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	OUT	power_out	Regulated +8 V output, up to 100 mA. Typical 8.0 V (7.68-8.32 V at Tj=25°C). Requires a 0.1 µF ceramic bypass capacitor to GND for stability.
2	GND	power_in	Common ground reference for input and output. Also serves as the thermal return path for the regulator die.
3	IN	power_in	Unregulated DC input. Recommended operating range 10.5 V to 23 V for 78L08; absolute maximum 35 V. Requires a 0.33 µF bypass capacitor to GND when the regulator is located far from the filter capacitor.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOT-89-3
Category	PMIC
Pins	3

CAD (KiCad official)

Symbol: 78L08
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`78l08.step`	57 KB	You want the bare part, or you mark your own boards.
`78l08-etched.step`	1.0 MB	You want the part with `78L08` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 269 faces against 42 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