BD433M2FP3-CE2 from ROHM, in a SOT-223-3. 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	VCC	power_in	Supply voltage input pin. Operating range 3.0 V to 42 V; absolute maximum 45 V. Bypass with ≥0.1 µF CIN close to the pin.
2	GND	power_in	Ground pin. Common return for input and output. Tie together with pin 4 (FIN exposed tab) at the ground plane.
3	VOUT	power_out	Regulated 3.3 V output pin, up to 200 mA. Requires ≥10 µF COUT (electrolytic, tantalum or ceramic) for phase compensation. Output accuracy ±2 %.
4	GND	power_in	FIN - exposed thermal tab / heat-sink fin, internally connected to GND. Must be soldered to the PCB ground copper for heat dissipation (Pd = 0.60 W in SOT223-4F).

Key specifications

Parameter	Value
Manufacturer	ROHM
Package	SOT-223-3
Category	PMIC
Pins	4

Ordering variants

BD433M2FP3-CE2
BD433M2FP3-CE2WFP3-CE2
BD433M2FP3-CE2EFJ-CE2
BD433M2FP3-CE2WEFJ-CE2

CAD (KiCad official)

Symbol: BD433M2FP3-CE2
Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
3D model: SOT-223-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`bd433m2fp3-ce2.step`	64 KB	You want the bare part, or you mark your own boards.
`bd433m2fp3-ce2-etched.step`	2.6 MB	You want the part with `BD433M2FP3-CE2` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 624 faces against 75 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: ROHM datasheet (37 pp, sha256 0bd95b7b4b1378f8, retrieved 2026-08-17, tier: manufacturer)
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