CN803S from ShangHai Consonance Elec, in a SOT-23. 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 reference for the device.
2	RESET	output	Active-low, open-drain reset output. Pulled low while VCC is below the 2.93V reset threshold (VRES). After VCC rises above VRES+VHYST (VHYST = 0.013 x VRES), the pin is held low for at least 140 ms (typ 240 ms, max 400 ms) and then goes high-impedance. VOL <= 0.3V at ISINK = 3.2 mA (VCC = 3V). Requires an external pull-up resistor.
3	VCC	power_in	Positive supply input and the voltage being monitored. Operating range 1.15V to 5.5V (abs max 6.0V). Typical IVCC = 3.2 uA at 3V. A 0.1 uF bypass capacitor to GND near this pin improves rejection of short VCC glitches.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	SOT-23
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

CN803S

CAD (KiCad official)

Symbol: CN803S
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cn803s.step`	59 KB	You want the bare part, or you mark your own boards.
`cn803s-etched.step`	1.6 MB	You want the part with `CN803S` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 366 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: ShangHai Consonance Elec datasheet (7 pp, sha256 4105c79299e10a52, 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