L78L05ABZ-TR from STMicroelectronics, in a TO-92-2.54mm. 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 5 V output, up to 100 mA. Typically bypassed with a 0.1 µF capacitor to GND for stability.
2	GND	power_in	Common ground reference for both input and output.
3	VIN	power_in	Unregulated DC input supply. Max 30 V for the 5 V option. Recommended input bypass capacitor 0.33 µF to GND.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	TO-92-2.54mm
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

L78L05ABZ-TRZ
L78L05ABZ-TRZ-AP
L78L05ABZ-TR
L78L05ABZ-TRD
L78L05ABZ-TRD-TR
L78L05ABZ-TRU
L78L05ABZ-TRU-TR

CAD (KiCad official)

Symbol: L78L05ABZ-TR
Footprint: Package_TO_SOT_THT:TO-92_Inline
3D model: TO-92-2.54mm (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`l78l05abz-tr.step`	27 KB	You want the bare part, or you mark your own boards.
`l78l05abz-tr-etched.step`	1.6 MB	You want the part with `L78L05ABZ-TR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 421 faces against 19 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: STMicroelectronics datasheet (46 pp, sha256 c8442b8687619720, retrieved 2026-08-17, tier: manufacturer)
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