L78M05HDTR from XBLW, in a TO-252. 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	VIN	power_in	Unregulated supply voltage input. Absolute max 40V; typical operating range 7-20V for 78M05. A 0.22μF (0.33μF per electrical characteristics) ceramic bypass capacitor to GND is required close to the pin for stability.
2	GND	power_in	Common ground reference for input and output. Tied internally to the exposed tab/cooling rib of the package.
3	OUTPUT	power_out	Regulated +5V output (4.9V min / 5.1V max for 78M05), up to 700mA with adequate heat sinking. A 1μF output capacitor to GND is recommended for load-transient response.
TAB	GND	power_in	Exposed metal tab / cooling rib, internally connected to GND (pin 2). Solder to a copper pour on the PCB for thermal dissipation (TO-252-2L max power dissipation ~2W at Tc=25°C).

Key specifications

Parameter	Value
Manufacturer	XBLW
Package	TO-252
Category	PMIC
Pins	4

Ordering variants

Same part, different packaging or reel option.

L78M05HDTR
L78M05HDTRSDTR
L78M05HDTRCV

CAD (KiCad official)

Symbol: L78M05HDTR
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`l78m05hdtr.step`	119 KB	You want the bare part, or you mark your own boards.
`l78m05hdtr-etched.step`	1.6 MB	You want the part with `L78M05HDTR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 429 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: XBLW datasheet (12 pp, sha256 1cf9b83662066f88, 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