78D05L from UMW, in a TO-252-2. 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	INPUT	power_in	Unregulated positive input supply. Absolute maximum V_I = 35V for the 5V variant. Bypass to GND with C_I = 0.33 µF close to the pin.
2	GND	power_in	Common ground reference for input and output. On TO-252/TO-252-3 the GND connection is also the thermal tab (die pad) and should be tied to a copper heatsink pour.
3	OUTPUT	power_out	Regulated +5V output. V_O typical 5.0V (4.8-5.2V at 25°C), up to 1A load current. Bypass to GND with C_O = 0.1 µF for stability. Internal short-circuit current limit ~800 mA (V_I = 35V).

Key specifications

Parameter	Value
Manufacturer	UMW
Package	TO-252-2
Category	PMIC
Pins	3

Ordering variants

78D05LL

CAD (KiCad official)

Symbol: 78D05L
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252-2 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`78d05l.step`	119 KB	You want the bare part, or you mark your own boards.
`78d05l-etched.step`	1.2 MB	You want the part with `78D05L` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 325 faces against 83 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 (15 pp, sha256 0816f246cc64ec64, 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