component
LM331AU-S5TR
Public Made by Adomby adom
3PEAK Comparators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"title": "LM331AU-S5TR",
"brief": "3PEAK Comparators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"package": "SOT-23-5",
"pin_count": 5,
"category": "Operational Amplifier/Comparator",
"subcategory": "Comparators",
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"lcsc": "C2981236",
"digikey": "5503-LM331AU-S5TR-ND"
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"source": "Component Ocean /api/assign-pns",
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"status": "found",
"lifecycle": "Active"
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"status": "no match"
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{
"number": "1",
"name": "-IN",
"type": "input",
"description": "Inverting comparator input; voltage range can go from V- to V+ - 1.5V."
},
{
"number": "2",
"name": "V-",
"type": "power_in",
"description": "Negative supply, normally tied to ground; V+ to V- must be 2.5V to 36V, with a 0.1µF bypass capacitor if not grounded."
},
{
"number": "3",
"name": "+IN",
"type": "input",
"description": "Non-inverting comparator input with the same voltage range as -IN (V- to V+ - 1.5V)."
},
{
"number": "4",
"name": "OUT",
"type": "output",
"description": "Open-collector comparator output, with voltage range extending to within millivolts of each supply rail."
},
{
"number": "5",
"name": "V+",
"type": "power_in",
"description": "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."
}
],
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"factory_chain": {
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"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text+vision",
"consensus_model": "claude-opus-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin mapping taken from the LM331AU top-view diagram on page 1 (1=-In, 2=V-, 3=+In, 4=Out, 5=V+). LM3",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 13,
"cost_usd": 0.2921,
"at": "2026-11-04T13:05:25"
},
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"pages": 13,
"sha256": "a1feff74578eb317",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 5,
"described": 5,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
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"file": "lm331au-s5tr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.8,
2.9,
1.55
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
"checked": "2026-11-04",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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},
"metadata": {
"specs": {
"Manufacturer": "3PEAK",
"Package": "SOT-23-5",
"Category": "Operational Amplifier/Comparator",
"Pins": "5"
},
"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Supply Voltage",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 2.5,
"typ": null,
"max": 36,
"conditions": "● full operating temperature range (-40°C ~ +125°C)",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input Offset Voltage (LM331A, LM331AU, LM331AU2)",
"symbol": "VOS",
"kind": "tolerance",
"unit": "mV",
"min": -6,
"typ": 0.6,
"max": 6,
"conditions": "VCC = 5 V to MAX, VIC = VICR(min), VO = 1.4V, -40°C ~ +125°C ●",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input Bias Current",
"symbol": "IB",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": 4,
"max": null,
"conditions": "VO = 1.4V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Common-mode Input Voltage Range (25°C)",
"symbol": "VCM",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": null,
"conditions": "25°C; upper limit printed as VDD-1.5",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Common-mode Input Voltage Range (full temperature)",
"symbol": "VCM",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": null,
"conditions": "-40°C ~ +125°C ●; upper limit printed as VDD-2",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Large-signal Differential Voltage Amplification",
"symbol": "AVD",
"kind": "electrical",
"unit": "V/mV",
"min": 50,
"typ": null,
"max": 400,
"conditions": "VCC = 15 V, VO = 1.4 V to 11.4 V, RL ≥ 15 kΩ to VCC",
"source_page": 3,
"source": "datasheet"
},
{
"name": "High-level Output Current",
"symbol": "IOH",
"kind": "electrical",
"unit": "nA",
"min": 25,
"typ": null,
"max": 200,
"conditions": "VOH = 5 V, VID = 1 V",
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{
"name": "Low-level Output Voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "mV",
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"typ": 250,
"max": 400,
"conditions": "IOL = 4mA, VID = −1V",
"source_page": 3,
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{
"name": "Low-level Output Voltage (full temperature)",
"symbol": "VOL",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 500,
"conditions": "IOL = 4mA, VID = −1V, -40°C ~ +125°C ●",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Low-level Output Current",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": 10,
"typ": null,
"max": null,
"conditions": "VOL = 1.5 V, VID = -1 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Quiescent Current per Comparator (VCC = 5 V)",
"symbol": "IQ",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 90,
"max": 300,
"conditions": "VCC = 5 V",
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"source": "datasheet"
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{
"name": "Quiescent Current per Comparator (VCC = 36 V)",
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"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 90,
"max": 300,
"conditions": "VCC = 36 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input Current (+IN, -IN)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": -20,
"typ": null,
"max": 20,
"conditions": "+IN, -IN, Note 2",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output Current (OUT)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": -20,
"typ": null,
"max": 20,
"conditions": "OUT",
"source_page": 2,
"source": "datasheet"
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{
"name": "Operating Temperature Range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Maximum Junction Temperature",
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"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Storage Temperature Range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Lead Temperature (Soldering)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "Soldering, 10 sec",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD Human Body Model",
"symbol": "HBM",
"kind": "absolute_maximum",
"unit": "kV",
"min": 4,
"typ": null,
"max": null,
"conditions": "ANSI/ESDA/JEDEC JS-001",
"source_page": 2,
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{
"name": "ESD Charged Device Model",
"symbol": "CDM",
"kind": "absolute_maximum",
"unit": "kV",
"min": 2,
"typ": null,
"max": null,
"conditions": "ANSI/ESDA/JEDEC JS-002",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Thermal Resistance Junction-to-Ambient (5-Pin SOT)",
"symbol": "RθJA",
"kind": "thermal",
"unit": "℃/W",
"min": null,
"typ": 118.3,
"max": null,
"conditions": "5-Pin SOT",
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"source": "datasheet"
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]
}
},
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"sections": [
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"discovery_triggers": [
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],
"discovery_pitch": "LM331AU-S5TR (3PEAK) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
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