78L09-150 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	Vout	power_out	Regulated +9 V output (typ 9.0 V, min 8.91 V, max 9.09 V at Tj=25°C). Delivers up to 150 mA. Requires a Co=0.1 µF output capacitor to ground for stability.
2	GND	power_in	Common ground / return reference for the regulator. Carries quiescent current (typ 2 mA, max 5.5 mA) plus load return.
3	INPUT	power_in	Unregulated DC input supply. Recommended Vi=15 V nominal for the 78L09; absolute maximum 35 V. Dropout voltage typ 1.7 V (Vi must exceed Vo by at least this margin). Bypass with C1=0.33 µF to ground close to the pin.

Key specifications

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

CAD (KiCad official)

Symbol: 78L09-150
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
`78l09-150.step`	57 KB	You want the bare part, or you mark your own boards.
`78l09-150-etched.step`	1.4 MB	You want the part with `78L09-150` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 358 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 (17 pp, sha256 fe2f4e8f0d975d52, 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