NCP1117DT50RKG from onsemi, in a TO-252-2(DPAK). 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. On fixed-voltage versions (e.g. NCP1117DT50) this pin is the ground reference; the datasheet labels it 'Adjust/Ground' because the same physical pin serves as the ADJ node on the adjustable variant. Quiescent current (typ 6.0 mA at Vin = 15 V) returns through this pin.
2	VOUT	power_out	Regulated 5.0 V output (typ 5.000 V, ±1.0 % initial accuracy, 4.900-5.100 V over 6.5 V ≤ Vin ≤ 12 V and 0-800 mA load). Capable of delivering in excess of 1.0 A with typical 1500 mA short-circuit current limit. Requires a 10 µF output capacitor for stability. The heatsink tab of the DPAK package is internally bonded to this pin.
3	VIN	power_in	Unregulated positive supply input, 7.0 V to 12 V typical for 5.0 V output (absolute maximum 20 V). Requires a 10 µF input bypass capacitor. Dropout voltage is typically 1.01 V at 500 mA and 1.07 V at 800 mA.

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	TO-252-2(DPAK)
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

NCP1117DT50RKG
NCP1117DT50RKGST50T3G

CAD (KiCad official)

Symbol: NCP1117DT50RKG
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ncp1117dt50rkg.step`	119 KB	You want the bare part, or you mark your own boards.
`ncp1117dt50rkg-etched.step`	2.0 MB	You want the part with `NCP1117DT50RKG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 535 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: onsemi datasheet (17 pp, sha256 1852f8c8cf0eb18c, 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