OPA338UA 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	NC	unconnected	No internal connection. Leave floating or tie to any convenient potential.
2	-In	input	Inverting input of the op-amp. High-impedance CMOS/FET input (~10^13 ohm), input bias current typ +/-0.2 pA, max +/-10 pA. Input voltage must remain within (V-) - 0.5V to (V+) + 0.5V.
3	+In	input	Non-inverting input of the op-amp. Common-mode range extends from (V-) - 0.2V up to (V+) - 1.2V. High-impedance FET input, 10 pA max bias.
4	V-	power_in	Negative supply rail. For single-supply operation, tie to GND. Total supply voltage (V+) - (V-) must be within 2.5V to 5.5V (7.5V absolute max).
5	NC	unconnected	No internal connection.
6	Output	output	Rail-to-rail op-amp output. Swings within ~40 mV (typ) of each rail into RL=25 kohm. Short-circuit current +/-9 mA typ; short to ground is continuous-safe.
7	V+	power_in	Positive supply rail. 2.5V to 5.5V specified operation, 7.5V absolute max across V+ to V-. Quiescent current typ 525 uA.
8	NC	unconnected	No internal connection.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

OPA338UA

CAD (KiCad official)

Symbol: OPA338UA
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

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