OPA2338UA from UMW, in a SOP-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	Out A	output	Amplifier A output. Rail-to-rail CMOS output stage; short-circuit current +/-9mA; voltage swing to within 40mV (typ, RL=25k) of either supply rail.
2	-In A	input	Inverting input of amplifier A. FET input; input bias current 10pA max; input voltage limited by internal diodes to (V-)-0.5V to (V+)+0.5V; max input current 10mA.
3	+In A	input	Non-inverting input of amplifier A. Common-mode voltage range includes ground (-0.2V to (V+)-1.2V). CMRR typ 90dB.
4	V-	power_in	Negative supply rail (ground in single-supply operation). Supply voltage range 2.7V to 5.5V (min operating 2.5V, absolute max total 7.5V across V+ to V-).
5	+In B	input	Non-inverting input of amplifier B. Common-mode range includes ground; CMRR 90dB typ.
6	-In B	input	Inverting input of amplifier B. FET input; input bias current 10pA max.
7	Out B	output	Amplifier B output. Rail-to-rail CMOS output; short-circuit current +/-9mA; continuous short-circuit protection to ground.
8	V+	power_in	Positive supply rail. 2.7V to 5.5V specified (2.5V minimum operating). Quiescent current 525uA per amplifier typ (1.05mA total for dual).

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

OPA2338UA

CAD (KiCad official)

Symbol: OPA2338UA
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`opa2338ua.step`	122 KB	You want the bare part, or you mark your own boards.
`opa2338ua-etched.step`	2.2 MB	You want the part with `OPA2338UA` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 538 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: UMW datasheet (12 pp, sha256 50f8fbc968e09604, 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