component

LM331AU-S5TR

Public Made by Adom

by adom

3PEAK Comparators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentoperational amplifier-comparatorlm331au-s5trfactory-2.0.0extractor-text

Verified LM331AU-S5TR

by Ray · last 4 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

4 Nov 2026RayPublished by the parts factory: tier lcsc, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LM331AU-S5TR · SOT-23-5 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 13-page datasheet
  • •distributor (warn): no ['mouser'] number
  • ✓family: SOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-wq6_tz4p/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lm331au-s5tr.kicad_sym✓ lm331au-s5tr.kicad_mod✓ lm331au-s5tr.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 2d ago
viewers lm331au-s5tr: viewers · Ray 2d ago
lm331au-s5tr-etched.glb Publish 0.1.0 · Ray 2d ago
lm331au-s5tr-etched.step lm331au-s5tr: factory component page (tier=lcsc) · Ray 2d ago
lm331au-s5tr-hero.glb lm331au-s5tr: hero GLB from the etched model (keeps the MPN mark) · Ray 2d ago
lm331au-s5tr-hero.overlay.json Publish 0.1.0 · Ray 2d ago
lm331au-s5tr.glb Publish 0.1.0 · Ray 2d ago
lm331au-s5tr.kicad_mod Publish 0.1.0 · Ray 2d ago
lm331au-s5tr.kicad_sym Publish 0.1.0 · Ray 2d ago
lm331au-s5tr.lbr Publish 0.1.0 · Ray 2d ago
lm331au-s5tr.step Publish 0.1.0 · Ray 2d ago
package.json Publish 0.1.0 · Ray 2d ago
page.json Set visibility: public · Ray 2d ago
README.md Publish 0.1.0 · Ray 2d ago
verification.json Verified: Published by the parts factory: tier lcsc, 5 pins · Ray 2d ago

LM331AU-S5TR

3PEAK · Comparators · SOT-23-5

LM331AU-S5TR from 3PEAK, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 -IN input Inverting comparator input; voltage range can go from V- to V+ - 1.5V.
2 V- power_in Negative supply, normally tied to ground; V+ to V- must be 2.5V to 36V, with a 0.1µF bypass capacitor if not grounded.
3 +IN input Non-inverting comparator input with the same voltage range as -IN (V- to V+ - 1.5V).
4 OUT output Open-collector comparator output, with voltage range extending to within millivolts of each supply rail.
5 V+ power_in Positive supply, typically 2.5V to 36V (split supplies allowed if V+ to V- is 2.5V to 36V), with a 0.1µF bypass capacitor close to the part.

Key specifications

Parameter Value
Manufacturer 3PEAK
Package SOT-23-5
Category Operational Amplifier/Comparator
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VDD 2.5 36 V ● full operating temperature range (-40°C ~ +125°C) 3
Input Offset Voltage (LM331A, LM331AU, LM331AU2) VOS -6 0.6 6 mV VCC = 5 V to MAX, VIC = VICR(min), VO = 1.4V, -40°C ~ +125°C ● 3
Input Bias Current IB 4 nA VO = 1.4V 3
Common-mode Input Voltage Range (25°C) VCM 0 V 25°C; upper limit printed as VDD-1.5 3
Common-mode Input Voltage Range (full temperature) VCM 0 V -40°C ~ +125°C ●; upper limit printed as VDD-2 3
Large-signal Differential Voltage Amplification AVD 50 400 V/mV VCC = 15 V, VO = 1.4 V to 11.4 V, RL ≥ 15 kΩ to VCC 3
High-level Output Current IOH 25 200 nA VOH = 5 V, VID = 1 V 3
Low-level Output Voltage VOL 250 400 mV IOL = 4mA, VID = −1V 3
Low-level Output Voltage (full temperature) VOL 500 mV IOL = 4mA, VID = −1V, -40°C ~ +125°C ● 3
Low-level Output Current IOL 10 mA VOL = 1.5 V, VID = -1 V 3
Quiescent Current per Comparator (VCC = 5 V) IQ 90 300 μA VCC = 5 V 3
Quiescent Current per Comparator (VCC = 36 V) IQ 90 300 μA VCC = 36 V 3
Input Current (+IN, -IN) -20 20 mA +IN, -IN, Note 2 2
Output Current (OUT) -20 20 mA OUT 2
Operating Temperature Range -40 125 °C 2
Maximum Junction Temperature 150 °C 2
Storage Temperature Range -65 150 °C 2
Lead Temperature (Soldering) 260 °C Soldering, 10 sec 2
ESD Human Body Model HBM 4 kV ANSI/ESDA/JEDEC JS-001 2
ESD Charged Device Model CDM 2 kV ANSI/ESDA/JEDEC JS-002 2
Thermal Resistance Junction-to-Ambient (5-Pin SOT) RθJA 118.3 ℃/W 5-Pin SOT 2

CAD (KiCad official)

  • Symbol: LM331AU-S5TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lm331au-s5tr-etched.step / lm331au-s5tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm331au-s5tr.step / lm331au-s5tr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: 3PEAK datasheet (13 pp, sha256 a1feff74578eb317, retrieved 2026-11-04, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF