component

LMV321B-TR

Public Made by Adom

by adom

3PEAK Operational Amplifier, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs lmv321b-tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
lmv321b-tr-etched.fit.json lmv321b-tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
lmv321b-tr-etched.glb lmv321b-tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
lmv321b-tr-etched.step lmv321b-tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
lmv321b-tr.glb Publish 0.1.0 · Ray 1mo ago
lmv321b-tr.kicad_mod Publish 0.1.0 · Ray 1mo ago
lmv321b-tr.kicad_sym Publish 0.1.0 · Ray 1mo ago
lmv321b-tr.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 5 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
lmv321b-tr.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 7d ago
README.md lmv321b-tr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 17d ago

LMV321B-TR

3PEAK · Operational Amplifier · SOT-23-5

LMV321B-TR from 3PEAK, 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 input; common-mode range extends from (V-) - 0.1 V to (V+) + 0.1 V. Input bias current ~1 pA at 25 °C. ESD-protected with clamp diodes to each rail; keep input current below ±10 mA if the pin is driven beyond the supplies.
2 -Vs power_in Negative supply rail (typically GND in single-supply operation). Total supply voltage (V+) - (V-) must not exceed 6 V absolute maximum; recommended 2.5 V to 5.5 V total.
3 -In input Inverting analog input. Rail-to-rail input; common-mode range extends 100 mV beyond each supply rail. Input bias current ~1 pA at 25 °C; input capacitance 8 pF differential / 7 pF common-mode.
4 Out output Rail-to-rail analog output. Swings to within 15 mV of each supply rail with a 10 kΩ load. Short-circuit current typically 100 mA (indefinite short-circuit duration allowed, subject to junction-temperature limits).
5 +Vs power_in Positive supply rail. Operating range 2.5 V to 5.5 V referenced to -Vs; absolute maximum (+Vs) - (-Vs) = 6 V. Quiescent current 80 µA typical (130 µA max) per amplifier. Bypass with a local decoupling capacitor to -Vs.

Key specifications

Parameter Value
Manufacturer 3PEAK
Package SOT-23-5
Category Op-amp/Cmp
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LMV321B-TR
  • LMV321B-TRCR

CAD (KiCad official)

  • Symbol: LMV321B-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lmv321b-tr-etched.step / lmv321b-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lmv321b-tr.step / lmv321b-tr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lmv321b-tr.step 85 KB You want the bare part, or you mark your own boards.
lmv321b-tr-etched.step 1.6 MB You want the part with LMV321B-TR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 405 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: 3PEAK datasheet (16 pp, sha256 77ea0faba82619fb, 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