NCV2903DR2G from onsemi, in a SOIC-8. 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	OUTA	output	Open-collector output of comparator A. Requires an external pull-up resistor to a positive supply (typ. 1 kΩ-100 kΩ). Sinks up to 16 mA when active.
2	OUTB	output	Open-collector output of comparator B. Requires an external pull-up resistor to a positive supply. Sinks up to 16 mA when active.
3	VCC	power_in	Positive supply voltage. Single-supply operation from +2.0 V to +36 V, or split-supply ±1.0 V to ±18 V. Typical supply current 0.8 mA for both comparators.
4	IN-B	input	Inverting input of comparator B. Common-mode input voltage range includes ground (V_CC − 1.5 V max). Input bias current typ. 25 nA.
5	IN+B	input	Non-inverting input of comparator B. Common-mode input voltage range includes ground. Input offset voltage typ. 2 mV.
6	IN-A	input	Inverting input of comparator A. Common-mode input voltage range includes ground (V_CC − 1.5 V max). Input bias current typ. 25 nA.
7	IN+A	input	Non-inverting input of comparator A. Common-mode input voltage range includes ground. Input offset voltage typ. 2 mV.
8	GND	power_in	Ground / negative supply reference. Tie to 0 V for single-supply operation, or to V_EE for split-supply operation.

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	SOIC-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

NCV2903DR2G

CAD (KiCad official)

Symbol: NCV2903DR2G
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ncv2903dr2g.step`	122 KB	You want the bare part, or you mark your own boards.
`ncv2903dr2g-etched.step`	2.5 MB	You want the part with `NCV2903DR2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 599 faces against 147 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 (13 pp, sha256 b87721993d627de6, 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