component
SM12OC
Public Made by Adomby adom
UMW Electrostatic And Surge Protection (TVS/ESD), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "sm12oc",
"title": "SM12OC",
"brief": "UMW Electrostatic And Surge Protection (TVS/ESD), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"tvs-fuse-board level protection",
"sm12oc",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "SM12OC",
"manufacturer": "UMW",
"package": "SOT-23",
"pin_count": 3,
"category": "TVS/Fuse/Board Level Protection",
"subcategory": "Electrostatic And Surge Protection (TVS/ESD)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/70d5700e3f550df687406d765ec14d1d.pdf",
"parts": {
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"footprint": "sm12oc.kicad_mod",
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"model_3d_step": "sm12oc.step",
"lbr": "sm12oc.lbr",
"model_3d_plain": "sm12oc.glb"
},
"distributor_links": {
"lcsc": "C20417175",
"digikey": "3372-SM12OCTR-ND"
},
"distributor_check": {
"checked_at": "2026-11-04T18:21:51Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "3372-SM12OCTR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "I/O1",
"type": "passive",
"description": "Protected bidirectional line 1 (TVS diode path to common pin 3); SM12OC has a 12V working voltage (VRWM) and 13.3V min breakdown at 1mA."
},
{
"number": "2",
"name": "I/O2",
"type": "passive",
"description": "Protected bidirectional line 2 (TVS diode path to common pin 3); SM12OC has a 12V working voltage (VRWM) and 13.3V min breakdown at 1mA."
},
{
"number": "3",
"name": "COMMON",
"type": "passive",
"description": "Common node of the two TVS diode pairs, shown joined at pin 3 in the schematic; connect it to the reference (ground) for the protected lines."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"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: The datasheet does not name the pins. Names I/O1, I/O2 and COMMON are inferred from the schematic. T",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 7,
"cost_usd": 0.0758,
"at": "2026-11-04T18:21:46"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/70d5700e3f550df687406d765ec14d1d.pdf",
"pages": 7,
"sha256": "ab41c5036950d20d",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
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"file": "sm12oc.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.5,
3,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
"checked": "2026-11-04",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "SOT-23",
"source_page": 5,
"D": {
"nom_mm": 2.9,
"range_mm": [
2.7,
3.1
]
},
"E1": {
"nom_mm": 1.425,
"range_mm": [
1.2,
1.65
]
},
"E": {
"nom_mm": 2.6,
"range_mm": [
2.2,
3
]
},
"e": {
"nom_mm": 0.95,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.4,
"range_mm": [
null,
1.4
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "sm12oc.step",
"verdict": "PASS",
"reasons": [
"height and body within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
},
"metadata": {
"specs": {
"Manufacturer": "UMW",
"Package": "SOT-23",
"Category": "TVS/Fuse/Board Level Protection",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "ab41c5036950d20d192666e4e95f7e5fa103a2bbd878199b0c7609bb8feeb75b",
"rows": [
{
"name": "Peak pulse power (tp=8/20us waveform)",
"symbol": "PPP",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 130,
"conditions": "tp = 8/20 µs waveform",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD per IEC 61000-4-2 (Air)",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "kV",
"min": -30,
"typ": null,
"max": 30,
"conditions": "IEC 61000-4-2 (Air)",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD per IEC 61000-4-2 (Contact)",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "kV",
"min": -20,
"typ": null,
"max": 20,
"conditions": "IEC 61000-4-2 (Contact)",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Junction Temperature",
"symbol": "TOPT",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Lead Solder Temperature – Maximum",
"symbol": "TL",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "10 second duration",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Reverse working voltage",
"symbol": "VRWM",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 12,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Breakdown voltage",
"symbol": "VB",
"kind": "electrical",
"unit": "V",
"min": 13.3,
"typ": null,
"max": null,
"conditions": "IT = 1 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Clamping voltage",
"symbol": "VC",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 19,
"conditions": "@ 1 A",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Clamping voltage",
"symbol": "VC",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 26,
"conditions": "@ 5 A",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Reverse leakage current",
"symbol": "IR",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 0.2,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Capacitance",
"symbol": "CT",
"kind": "electrical",
"unit": "pF",
"min": null,
"typ": null,
"max": 15,
"conditions": "",
"source_page": 3,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
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"readme",
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],
"discovery_triggers": [
"sm12oc"
],
"discovery_pitch": "SM12OC (UMW) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
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"visibility": {
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}
}