WS72358M-8 from WILLSEMI Will Semicon, 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	Amplifier A output. Rail-to-rail output stage; drives loads down to 2kΩ, output short-circuit current ~46mA.
2	-INA	input	Amplifier A inverting input. Common-mode input range (V-)-0.2V to (V+)+0.2V; input bias current ~10pA.
3	+INA	input	Amplifier A non-inverting input. Rail-to-rail input capability; input bias current ~10pA.
4	V-	power_in	Negative supply / ground. Supply voltage (V+)-(V-) is 1.8V to 5.5V; absolute maximum 6V.
5	+INB	input	Amplifier B non-inverting input. Rail-to-rail input capability; input bias current ~10pA.
6	-INB	input	Amplifier B inverting input. Common-mode input range (V-)-0.2V to (V+)+0.2V; input bias current ~10pA.
7	OUTB	output	Amplifier B output. Rail-to-rail output stage; drives loads down to 2kΩ, output short-circuit current ~46mA.
8	V+	power_in	Positive supply. Single supply 1.8V to 5.5V referenced to V-; absolute maximum (V+)-(V-) = 6V.

Key specifications

Parameter	Value
Manufacturer	WILLSEMI Will Semicon
Package	MSOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

WS72358M-8/TR
WS72358M-8S-8/TR

CAD (KiCad official)

Symbol: WS72358M-8
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: WILLSEMI Will Semicon datasheet (12 pp, sha256 0e7700e3ab6d8595, 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