HT7830-A from UMW, 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	GND	power_in	Device ground return. All voltages (VIN, VOUT) are referenced to this pin.
3	VIN	power_in	Unregulated supply input. Absolute max 15 V (recommended operating up to 12 V). For 3.0 V output, VIN must be ≥ ~4 V (dropout ~100 mV at 40 mA). A small input decoupling capacitor to GND is recommended.
2	VOUT	power_out	Regulated 3.0 V output (±3% tolerance, 2.91-3.09 V). Delivers up to 450 mA. An output capacitor to GND is required for stability.

Key specifications

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

CAD (KiCad official)

Symbol: HT7830-A
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ht7830-a.step`	57 KB	You want the bare part, or you mark your own boards.
`ht7830-a-etched.step`	1.1 MB	You want the part with `HT7830-A` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 297 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 (12 pp, sha256 0ddd2116b6d87a09, 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