component
SRF1812P050
Public Made by Adomby adom
prosemi Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374
{
"schema_version": 1,
"type": "component",
"slug": "srf1812p050",
"title": "SRF1812P050",
"brief": "prosemi Resettable Fuses, 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",
"srf1812p050",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "SRF1812P050",
"manufacturer": "prosemi",
"package": "1812",
"pin_count": 2,
"category": "Circuit Protection",
"subcategory": "Resettable Fuses",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590918761941708800",
"parts": {
"symbol": "srf1812p050.kicad_sym",
"footprint": "srf1812p050.kicad_mod",
"model_3d": "srf1812p050-hero.glb",
"model_3d_plain": "srf1812p050-etched.glb",
"model_3d_step": "srf1812p050-etched.step",
"model_3d_step_plain": "srf1812p050.step",
"lbr": "srf1812p050.lbr"
},
"distributor_links": {
"lcsc": "C21261153"
},
"distributor_check": {
"checked_at": "2026-10-19T03:02:35Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "1",
"type": "passive",
"description": "First terminal of the non-polarized PTC resettable fuse (one end-cap pad, recommended pad 1.78±0.1 mm x 3.15±0.1 mm), rated hold current 0.50 A, trip current 1.00 A, Vmax 60 V."
},
{
"number": "2",
"name": "2",
"type": "passive",
"description": "Second terminal of the non-polarized PTC resettable fuse (other end-cap pad, 3.45±0.1 mm pad gap), rated hold current 0.50 A, trip current 1.00 A, Vmax 60 V."
}
],
"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 drawing shows a two-terminal SMD PTC fuse with an end-cap pad at each end, but it prin",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 3,
"cost_usd": 0.1039,
"at": "2026-10-19T02:59:24"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590918761941708800",
"pages": 3,
"sha256": "0f89034024a1602c",
"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": "srf1812p050.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.52,
3.22,
0.9
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "b9179fd5a625b079a7cf4f677d24dbabfd992ce91c61629082161dbd368d5b38",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "srf1812p050-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.52,
3.22,
0.9
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "0cd7edba1eda85e826aac93bd8d8824786a8d61c5f58e19df1f8ab834387feac",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "prosemi",
"Package": "1812",
"Category": "Circuit Protection",
"Pins": "2"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "0f89034024a1602c7f08b776baeb58b017683482e6f6febe2271bf01123f9274",
"rows": [
{
"name": "Hold current (max, will not trip at 25°C still air)",
"symbol": "IH",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "25°C still air, after one reflow; per definition IH = maximum current at which the device will not trip",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Trip current (min, will always trip at 25°C still air)",
"symbol": "IT",
"kind": "electrical",
"unit": "A",
"min": 1,
"typ": null,
"max": null,
"conditions": "25°C still air; per definition IT = minimum current at which the device will always trip",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum continuous voltage",
"symbol": "Vmax",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 60,
"conditions": "Maximum continuous voltage device can withstand without damage at rated current",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum fault current",
"symbol": "Imax",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 40,
"conditions": "Maximum fault current device can withstand without damage at rated voltage",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Minimum resistance in initial (un-soldered) state",
"symbol": "Rmin",
"kind": "electrical",
"unit": "Ω",
"min": 0.15,
"typ": null,
"max": null,
"conditions": "Initial un-soldered state",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum resistance at 25°C one hour after reflow",
"symbol": "R1max",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 1.4,
"conditions": "25°C, measured one hour after reflow",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient -40°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.69,
"max": null,
"conditions": "Ambient operating temperature -40°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient -20°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.59,
"max": null,
"conditions": "Ambient operating temperature -20°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient 0°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.55,
"max": null,
"conditions": "Ambient operating temperature 0°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient 25°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.5,
"max": null,
"conditions": "Ambient operating temperature 25°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient 40°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.45,
"max": null,
"conditions": "Ambient operating temperature 40°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient 50°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.43,
"max": null,
"conditions": "Ambient operating temperature 50°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient 60°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.35,
"max": null,
"conditions": "Ambient operating temperature 60°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient 70°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.3,
"max": null,
"conditions": "Ambient operating temperature 70°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Hold current at ambient 85°C (thermal derating chart)",
"symbol": "IH",
"kind": "thermal",
"unit": "A",
"min": null,
"typ": 0.23,
"max": null,
"conditions": "Ambient operating temperature 85°C",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"srf1812p050"
],
"discovery_pitch": "SRF1812P050 (prosemi) 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",
"srf1812p050.kicad_sym",
"srf1812p050.kicad_mod",
"srf1812p050.glb",
"srf1812p050.step",
"srf1812p050.lbr",
"docs/hero.png",
"docs/srf1812p050-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"srf1812p050-hero.glb",
"srf1812p050-hero.overlay.json",
"srf1812p050-etched.glb"
],
"visibility": {
"public": true
}
}