L78M10ABDT-TR from STMicroelectronics, in a TO-252-2(DPAK). 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 DC input supply. Recommended input range for a 10 V output is approximately 12.5 V to 35 V (VI absolute max = 35 V for VO 5-18 V). A 0.33 µF ceramic bypass capacitor to GND is recommended close to the pin.
2	GND	power_in	Common ground reference for input and output. Electrically connected to the DPAK metal tab, which also serves as the primary thermal path (RthJC = 8 °C/W).
3	OUTPUT	power_out	Regulated +10 V DC output, up to 0.5 A with adequate heat-sinking. A 0.1 µF ceramic output capacitor to GND is recommended for transient response.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	TO-252-2(DPAK)
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

L78M10ABDT-TR

CAD (KiCad official)

Symbol: L78M10ABDT-TR
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`l78m10abdt-tr.step`	119 KB	You want the bare part, or you mark your own boards.
`l78m10abdt-tr-etched.step`	1.7 MB	You want the part with `L78M10ABDT-TR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 470 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: STMicroelectronics datasheet (31 pp, sha256 18210f0af10e88c0, 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