DK5V45R10ST1 from Shenzhen DongKe Semicon, in a TO-220. 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	NC	unconnected	No connect. Leave floating in the application; this lead is not internally bonded to any active node.
2	K	passive	Cathode terminal, equivalent to the cathode of a Schottky rectifier diode. Internally the drain of the integrated 45 V / 10 mΩ NMOS; self-powered VCC is derived from K when K > A. Absolute max V(BR)DSS = 45 V; VOVP threshold 10 V (ref. A).
3	A	passive	Anode terminal, equivalent to the anode of a Schottky rectifier diode. Internally the NMOS source and the chip's voltage reference (all datasheet voltages are with respect to A). Continuous current 60 A max, peak 100 A max.

Key specifications

Parameter	Value
Manufacturer	Shenzhen DongKe Semicon
Package	TO-220
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

DK5V45R10ST1

CAD (KiCad official)

Symbol: DK5V45R10ST1
Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
3D model: TO-220 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`dk5v45r10st1.step`	83 KB	You want the bare part, or you mark your own boards.
`dk5v45r10st1-etched.step`	1007 KB	You want the part with `DK5V45R10ST1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 270 faces against 48 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: Shenzhen DongKe Semicon datasheet (7 pp, sha256 031c8dd38fcefae4, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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