CN303 from ShangHai Consonance Elec, in a SOT-23-6. 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	IN1	input	Voltage detection input 1. Typically connected to an external resistor divider to sense a voltage. Rising threshold VRTH1 = 1.211V typ, falling threshold VFTH1 = 1.12V typ. Input leakage ±100nA max.
2	GND	power_in	Power ground reference for the device.
3	OUT1	output	Voltage detection output 1. CMOS output - drives high when IN1 exceeds the rising threshold and low when IN1 falls 7.5% below the rising threshold. VOL ≤ 0.3V at ISINK=3.2mA (VCC=3V); VOH ≥ VCC−0.4V at ISOURCE=3mA (VCC=3V).
4	VCC	power_in	Positive supply input for internal circuitry. Operating range 1.9V to 6V (absolute max 6.5V). Typical IVCC = 11µA at VCC=3V.
5	OUT2	output	Voltage detection output 2. CMOS output - drives high when IN2 exceeds the rising threshold and low when IN2 falls 7.5% below the rising threshold. Same drive levels as OUT1.
6	IN2	input	Voltage detection input 2. Typically connected to an external resistor divider to sense a voltage. Rising threshold VRTH2 = 1.211V typ, falling threshold VFTH2 = 1.12V typ. Input leakage ±100nA max.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

CN303

CAD (KiCad official)

Symbol: CN303
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cn303.step`	97 KB	You want the bare part, or you mark your own boards.
`cn303-etched.step`	1.4 MB	You want the part with `CN303` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 341 faces against 117 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 2bedab7350bdff1a, 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