LMV321IDBVR from UMW, in a SOT-23-5. 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	IN+	input	Non-inverting analog input. Rail-to-rail common-mode range from (-VS)-0.1V to (+VS)+0.1V (VCM -0.1V to 5.6V at Vs=5.5V). Input bias current 10 nA typ.
2	VSS	power_in	Negative supply / ground. Tie to system GND for single-supply operation. Total supply (VDD-VSS) 2.1V to 5.5V (absolute max 7.5V).
3	IN-	input	Inverting analog input. Same common-mode and bias characteristics as IN+. Used with feedback network for closed-loop gain configuration.
4	OUT	output	Rail-to-rail amplifier output. Output current 20 mA min / 25 mA typ, slew rate 0.52 V/µs, GBW 1 MHz.
5	VDD	power_in	Positive supply rail. Operating range 2.1V to 5.5V (absolute max 7.5V). Decouple with 100 nF close to the pin.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOT-23-5
Category	Op-amp/Cmp
Pins	5

Ordering variants

Same part, different packaging or reel option.

LMV321IDBVR

CAD (KiCad official)

Symbol: LMV321IDBVR
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lmv321idbvr.step`	85 KB	You want the bare part, or you mark your own boards.
`lmv321idbvr-etched.step`	1.7 MB	You want the part with `LMV321IDBVR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 447 faces against 102 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 (15 pp, sha256 92ba53cd7280c726, 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