MC7805BDTRKG 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	VI	power_in	Unregulated positive input supply. Must remain at least ~2.0 V above the 5.0 V output (dropout typ 2.0 V at Io = 1.0 A). Absolute-maximum input voltage 35 Vdc (40 Vdc for the 24 V variant). A 0.33 uF ceramic input cap (Cin) is recommended if the regulator sits any appreciable distance from the bulk supply filter.
2	GND	power_in	Common ground reference shared by input and output. On DPAK-3 / D2PAK-3 packages the exposed heatsink tab is internally connected to this pin, so the mounting pad is at ground potential and can be soldered directly to the PCB ground plane for heat dissipation.
3	VO	power_out	Regulated +5.0 V output, 4.8-5.2 V over Tj = 25 °C for the 'B' grade, capable of >1.0 A with adequate heatsinking (peak Imax typ 2.2 A, Isc typ 0.2 A at Vin = 35 V). An output capacitor (Co, typically >=0.1 uF) is not required for stability but improves transient response; smaller values may cause instability.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

MC7805BDTRKG
MC7805BDTRKGBDTG
MC7805BDTRKGBD2TRKG
MC7805BDTRKGBD2TG
MC7805BDTRKGBTG
MC7805BDTRKGBT

CAD (KiCad official)

Symbol: MC7805BDTRKG
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
`mc7805bdtrkg.step`	119 KB	You want the bare part, or you mark your own boards.
`mc7805bdtrkg-etched.step`	2.0 MB	You want the part with `MC7805BDTRKG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 530 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 (31 pp, sha256 ad3f70896343dcf0, 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