SGM358YMS from SGMICRO, in a MSOP-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	Output of amplifier A. Rail-to-rail output; source/sink ~84mA/75mA typical at VS=5V.
2	-INA	input	Inverting input of amplifier A. Rail-to-rail input, common-mode range -0.1V to VS+0.1V; input bias current 10pA typical.
3	+INA	input	Non-inverting input of amplifier A. Rail-to-rail input, common-mode range -0.1V to VS+0.1V; input bias current 10pA typical.
4	-VS	power_in	Negative supply rail (or GND in single-supply). Supply range 2.1V to 5.5V between +VS and -VS. Absolute max VS to -VS is 6V.
5	+INB	input	Non-inverting input of amplifier B. Rail-to-rail input, common-mode range -0.1V to VS+0.1V; input bias current 10pA typical.
6	-INB	input	Inverting input of amplifier B. Rail-to-rail input, common-mode range -0.1V to VS+0.1V; input bias current 10pA typical.
7	OUTB	output	Output of amplifier B. Rail-to-rail output; source/sink ~84mA/75mA typical at VS=5V.
8	+VS	power_in	Positive supply rail. Operating supply 2.1V to 5.5V; quiescent current ~60μA/amplifier. Absolute max VS to -VS is 6V.

Key specifications

Parameter	Value
Manufacturer	SGMICRO
Package	MSOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

SGM358YMS/TR
SGM358YS/TR
SGM358YP

CAD (KiCad official)

Symbol: SGM358YMS
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sgm358yms.step`	123 KB	You want the bare part, or you mark your own boards.
`sgm358yms-etched.step`	2.3 MB	You want the part with `SGM358YMS` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 552 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: SGMICRO datasheet (17 pp, sha256 fba663a08e67e2de, 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