78L33 from Shikues, 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 +3.3 V output. Delivers up to 150 mA. Recommended output bypass capacitor Co = 0.1 µF; not required for stability but improves transient response.
2	GND	power_in	Common ground reference. A common ground is required between the input and output voltages.
3	VIN	power_in	Unregulated positive supply input. Absolute max VIN = 30 V; must remain typically 2.0 V above VOUT (dropout ~2 V at IO=100 mA). Recommended input bypass capacitor Cin = 0.33 µF.

Key specifications

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

CAD (KiCad official)

Symbol: 78L33
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
`78l33.step`	57 KB	You want the bare part, or you mark your own boards.
`78l33-etched.step`	1.0 MB	You want the part with `78L33` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 268 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: Shikues datasheet (7 pp, sha256 2f2bf1f5a553c543, 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