UA78L05ACDR from Texas Instruments, in a SOIC-8. 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	OUTPUT	power_out	Regulated +5 V output, up to 100 mA. A 0.1-uF capacitor to COMMON is recommended for stability and transient response.
2	COMMON	power_in	Common/ground reference for the regulator. Tie to system ground; internally connected to pins 3 and 6.
3	COMMON	power_in	Common/ground reference for the regulator. Tie to system ground; internally connected to pins 2 and 6. Also aids thermal dissipation via the PCB copper.
4	NC	unconnected	No internal connection. Leave floating or tie to COMMON as desired for PCB routing.
5	NC	unconnected	No internal connection. Leave floating or tie to COMMON as desired for PCB routing.
6	COMMON	power_in	Common/ground reference for the regulator. Tie to system ground; internally connected to pins 2 and 3.
7	COMMON	power_in	Common/ground reference for the regulator. Tie to system ground; internally connected to the other COMMON pins.
8	INPUT	power_in	Unregulated positive input. Recommended input voltage 7 V to 20 V for UA78L05AC (absolute max 30 V). A 0.33-uF bypass capacitor to COMMON is recommended when the regulator is located far from the power-supply filter.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

UA78L05ACDRD
UA78L05ACDR
UA78L05ACDRLP
UA78L05ACDRLPE3
UA78L05ACDRLPR
UA78L05ACDRPK

CAD (KiCad official)

Symbol: UA78L05ACDR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ua78l05acdr.step`	122 KB	You want the bare part, or you mark your own boards.
`ua78l05acdr-etched.step`	2.2 MB	You want the part with `UA78L05ACDR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 554 faces against 147 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: Texas Instruments datasheet (27 pp, sha256 b5552b55c2be8616, 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