HT7805ARMZ from HTCSEMI, 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 positive input voltage. Operating range 7V to 20V for the HT7805A (35V absolute maximum). A bypass capacitor to GND close to this pin is recommended for stability.
2	GND	power_in	Ground reference for both input and output. Also serves as the thermal path via the package tab on TO-220/TO-252/TO-263 (tab is electrically connected to GND).
3	VOUT	power_out	Regulated +5.0V output (4.8V to 5.2V at TJ=25 C). Sources up to 1.5A with internal current limiting and thermal shutdown. An output capacitor to GND is recommended for transient response.

Key specifications

Parameter	Value
Manufacturer	HTCSEMI
Package	TO-252
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

HT7805ARMZS
HT7805ARMZ
HT7805ARMZT
HT7805ARMZD

CAD (KiCad official)

Symbol: HT7805ARMZ
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
`ht7805armz.step`	119 KB	You want the bare part, or you mark your own boards.
`ht7805armz-etched.step`	1.7 MB	You want the part with `HT7805ARMZ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 440 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: HTCSEMI datasheet (6 pp, sha256 0749d78f58a6be2f, 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