DS8242-33S3 from DSTECH, in a SOT-23-3. 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	Ground return for the regulator. Connect to system ground with a wide, short trace back to the input and output capacitor ground pads for best performance.
2	VOUT	power_out	Regulated output of the LDO, fixed at 3.3V for the -33 option (±1% accuracy, up to 500mA load). Requires a ≥1µF output capacitor (1mΩ minimum ESR, 1µF-22µF effective capacitance) placed close to the pin.
3	VIN	power_in	Input supply voltage, operating range 2.0V to 24V (absolute max 30V). Requires a ≥1µF ceramic bypass capacitor to GND placed close to the pin.

Key specifications

Parameter	Value
Manufacturer	DSTECH
Package	SOT-23-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

DS8242-33S3
DS8242-33S3SS3
DS8242-33S3S5
DS8242-33S3A3
DS8242-33S3A3L
DS8242-33S3A3R

CAD (KiCad official)

Symbol: DS8242-33S3
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ds8242-33s3.step`	59 KB	You want the bare part, or you mark your own boards.
`ds8242-33s3-etched.step`	2.5 MB	You want the part with `DS8242-33S3` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 578 faces against 69 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: DSTECH datasheet (12 pp, sha256 02f10bfeea1c3ede, 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