LM2903DR2G 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 VCC (typ. 1 kΩ-100 kΩ). Sinks up to 16 mA when active low.
2	OUTB	output	Open-collector output of comparator B. Requires an external pull-up resistor to VCC. Sinks up to 16 mA when active low.
3	VCC	power_in	Positive supply rail. Single-supply operation 2 V to 36 V, or split-supply ±1 V to ±18 V.
4	INB-	input	Inverting input of comparator B. Common-mode range extends from V- (GND) to VCC − 1.5 V.
5	INB+	input	Non-inverting input of comparator B. Common-mode range extends from V- (GND) to VCC − 1.5 V.
6	INA-	input	Inverting input of comparator A. Common-mode range extends from V- (GND) to VCC − 1.5 V.
7	INA+	input	Non-inverting input of comparator A. Common-mode range extends from V- (GND) to VCC − 1.5 V.
8	GND	power_in	Ground / negative supply rail (V-). Tied to 0 V in single-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.

LM2903DR2G
LM2903DR2GDG

CAD (KiCad official)

Symbol: LM2903DR2G
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
`lm2903dr2g.step`	122 KB	You want the bare part, or you mark your own boards.
`lm2903dr2g-etched.step`	2.3 MB	You want the part with `LM2903DR2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 564 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 (12 pp, sha256 f373bad3f48ee0ff, 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