L78L08ABUTR from STMicroelectronics, 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 +8 V output pin. Sources up to 100 mA. Recommended 0.1 uF ceramic bypass capacitor to GND for transient response and stability.
2	GND	power_in	Common ground return for both input and output. In SOT-89 this pin is also the die-attach tab and provides the primary thermal path to the PCB.
3	VIN	power_in	Unregulated positive DC input. Absolute maximum 30 V for VO = 3.3 to 9 V variants (applies to the 8 V L78L08). Recommended 0.33 uF ceramic bypass capacitor to GND near the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

L78L08ABUTR
L78L08ACUTR
L78L08ABZ-AP
L78L08ABZTR
L78L08ACZ
L78L08ACZ-AP
L78L08ACZTR
L78L08ABD13TR
L78L08ACD13TR
L78L08CD13TR

CAD (KiCad official)

Symbol: L78L08ABUTR
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: STMicroelectronics datasheet (45 pp, sha256 43922ae159face7e, 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