component
RL1812A391K
Public Made by Adomby adom
RUILON Shenzhen Ruilongyuan Elec Varistors, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350
{
"schema_version": 1,
"type": "component",
"slug": "rl1812a391k",
"title": "RL1812A391K",
"brief": "RUILON Shenzhen Ruilongyuan Elec Varistors, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"circuit protection",
"rl1812a391k",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "RL1812A391K",
"manufacturer": "RUILON Shenzhen Ruilongyuan Elec",
"package": "1812",
"pin_count": 2,
"category": "Circuit Protection",
"subcategory": "Varistors",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8771471795071803392",
"parts": {
"symbol": "rl1812a391k.kicad_sym",
"footprint": "rl1812a391k.kicad_mod",
"model_3d": "rl1812a391k-hero.glb",
"model_3d_plain": "rl1812a391k-etched.glb",
"model_3d_step": "rl1812a391k-etched.step",
"model_3d_step_plain": "rl1812a391k.step",
"lbr": "rl1812a391k.lbr"
},
"distributor_links": {
"lcsc": "C2935539"
},
"distributor_check": {
"checked_at": "2026-10-19T09:27:52Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "error"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "1",
"type": "passive",
"description": "One terminal of the bidirectional, symmetrical varistor (WB 0.60±0.25 mm end termination); for RL1812A391K the varistor voltage is 351~429 V at 1 mA, with max allowable voltage 250 VAC / 320 VDC."
},
{
"number": "2",
"name": "2",
"type": "passive",
"description": "Second terminal of the bidirectional, symmetrical varistor, interchangeable with the other terminal; for RL1812A391K the varistor voltage is 351~429 V at 1 mA, with max allowable voltage 250 VAC / 320 VDC."
}
],
"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 1812 package drawing (page 4) shows a two-terminal chip with no pin numbers or polarity marks. T",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 5,
"cost_usd": 0.1073,
"at": "2026-10-19T09:25:38"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8771471795071803392",
"pages": 5,
"sha256": "61703208a13c9353",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 2,
"described": 2,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "rl1812a391k.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.5,
3.2,
0.6
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "1efc89b1825fb585a1cc77954655b8e0db16d3de91237adf42ce79142e58826d",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "rl1812a391k-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.5,
3.2,
0.6
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "e86dbdd447e5350ce3ca40762a7c41b6d35a5a7f0e91cf4512fe320a46f0f615",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "RUILON Shenzhen Ruilongyuan Elec",
"Package": "1812",
"Category": "Circuit Protection",
"Pins": "2"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "61703208a13c9353723ccc132397e6ffb6d6dc3e04ecf6fce01f4e915691643e",
"rows": [
{
"name": "Varistor voltage V1mA",
"symbol": "V1mA",
"kind": "electrical",
"unit": "V",
"min": 351,
"typ": null,
"max": 429,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Max allowable voltage (AC)",
"symbol": "VAC",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 250,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Max allowable voltage (DC)",
"symbol": "VDC",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 320,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Max energy",
"symbol": "",
"kind": "absolute_maximum",
"unit": "J",
"min": null,
"typ": null,
"max": 2.3,
"conditions": "10/1000μs",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Max clamping voltage",
"symbol": "VC",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 675,
"conditions": "8/20μs, IP = 10 A",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Withstanding surge current",
"symbol": "I",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 400,
"conditions": "8/20μs",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Tolerance (K code)",
"symbol": "",
"kind": "tolerance",
"unit": "%",
"min": -10,
"typ": null,
"max": 10,
"conditions": "Standard tolerance K: ±10%",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Varistor voltage change after bias humidity",
"symbol": "VV/VV",
"kind": "electrical",
"unit": "%",
"min": -10,
"typ": null,
"max": 10,
"conditions": "90%RH, 40ºC, working voltage, 1000 hrs",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Varistor voltage change after thermal shock",
"symbol": "VV/VV",
"kind": "electrical",
"unit": "%",
"min": -10,
"typ": null,
"max": 10,
"conditions": "-40ºC to 85ºC, 30 min cycle, 5 cycles",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Varistor voltage change after full load",
"symbol": "VV/VV",
"kind": "electrical",
"unit": "%",
"min": -10,
"typ": null,
"max": 10,
"conditions": "Working voltage, 85ºC, 1000 hrs",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Response time",
"symbol": "",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": null,
"max": 1,
"conditions": "<1ns as printed",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Operating temperature range",
"symbol": "",
"kind": "recommended_operating",
"unit": "℃",
"min": -55,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "",
"kind": "recommended_operating",
"unit": "℃",
"min": 5,
"typ": null,
"max": 40,
"conditions": "Storage; relative humidity up to 65%",
"source_page": 3,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"rl1812a391k"
],
"discovery_pitch": "RL1812A391K (RUILON Shenzhen Ruilongyuan Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"rl1812a391k.kicad_sym",
"rl1812a391k.kicad_mod",
"rl1812a391k.glb",
"rl1812a391k.step",
"rl1812a391k.lbr",
"docs/hero.png",
"docs/rl1812a391k-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"rl1812a391k-hero.glb",
"rl1812a391k-hero.overlay.json",
"rl1812a391k-etched.glb"
],
"visibility": {
"public": true
}
}