HT7133-1 from UMW, in a SOT-89. 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	GND	power_in	Ground reference (0V) for the regulator. Connect to the system ground plane; the input and output decoupling capacitors return here.
2	VIN	power_in	Unregulated input supply, up to 30V absolute maximum. Bypass with a 10µF capacitor (C1) to GND close to the pin per the application circuit.
3	VOUT	power_out	Regulated 3.3V output (±3%, tested at VIN=5.5V, IOUT=10mA). Rated 60mA typical / 100mA max output current; requires a 10µF (C2) output capacitor to GND for stability.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

HT7133-1
HT7133-1-A

CAD (KiCad official)

Symbol: HT7133-1
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ht7133-1.step`	57 KB	You want the bare part, or you mark your own boards.
`ht7133-1-etched.step`	927 KB	You want the part with `HT7133-1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 268 faces against 42 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: UMW datasheet (14 pp, sha256 ae108c17cf1258c8, 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