LM321LVIDBVR from Texas Instruments, 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	Noninverting input of the op amp. Input common-mode range includes the V- rail (ground for single-supply operation).
2	V-	power_in	Negative (low) supply rail, or ground for single-supply operation. Supply range 2.7 V to 5.5 V total (V+ minus V-).
3	IN-	input	Inverting input of the op amp. Typical input offset voltage ±1 mV.
4	OUT	output	Op-amp output. Unity-gain stable with 1 MHz gain-bandwidth product.
5	V+	power_in	Positive (high) supply rail. Operating supply voltage 2.7 V to 5.5 V referenced to V-.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM321LVIDBVR
LM321LVIDBVT
LM321LVIDBVRIDCKR
LM321LVIDBVRIDCKT

CAD (KiCad official)

Symbol: LM321LVIDBVR
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
`lm321lvidbvr.step`	85 KB	You want the bare part, or you mark your own boards.
`lm321lvidbvr-etched.step`	1.8 MB	You want the part with `LM321LVIDBVR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 462 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: Texas Instruments datasheet (46 pp, sha256 dfb389bf4341032c, retrieved 2026-08-17, tier: manufacturer)
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