component
1SMB5919B
Public Made by Adomby adom
OTW Zener Diodes, SMB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373
{
"schema_version": 1,
"type": "component",
"slug": "1smb5919b",
"title": "1SMB5919B",
"brief": "OTW Zener Diodes, SMB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"diodes",
"1smb5919b",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "1SMB5919B",
"manufacturer": "OTW",
"package": "SMB",
"pin_count": 2,
"category": "Diodes",
"subcategory": "Zener Diodes",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/013e469fe2daa455a55e23be82fe2b19.pdf",
"parts": {
"symbol": "1smb5919b.kicad_sym",
"footprint": "1smb5919b.kicad_mod",
"model_3d": "1smb5919b-hero.glb",
"model_3d_plain": "1smb5919b-etched.glb",
"model_3d_step": "1smb5919b-etched.step",
"model_3d_step_plain": "1smb5919b.step",
"lbr": "1smb5919b.lbr"
},
"distributor_links": {
"lcsc": "C713627"
},
"distributor_check": {
"checked_at": "2026-10-21T15:17:03Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "K",
"type": "passive",
"description": "Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint."
},
{
"number": "2",
"name": "A",
"type": "passive",
"description": "Anode."
}
],
"provenance": {
"extractor": "extract_pins",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins",
"primary_model": "cathode-band convention",
"primary_mode": "convention",
"consensus_model": null,
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 3,
"cost_usd": 0.0014,
"at": "2026-10-21T15:12:21"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/013e469fe2daa455a55e23be82fe2b19.pdf",
"pages": 3,
"sha256": "2a717566c35b92b4",
"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": "1smb5919b.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.3,
3.55,
2.15
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "029466277d91e9f5492556be93e46611049e07115c7913880c547afa96058ed4",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "1smb5919b-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.3,
3.55,
2.15
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "160569d8fe8d3246ff5fc7e5c73aa92d45df09137ee24b38ca8ec98fcd592ba3",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "OTW",
"Package": "SMB",
"Category": "Diodes",
"Pins": "2"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "2a717566c35b92b45c0ff4690b87d63ce4098ed64e90f4b8426a976af5848129",
"rows": [
{
"name": "Nominal Zener voltage (min / nom / max)",
"symbol": "VZ",
"kind": "electrical",
"unit": "V",
"min": 5.32,
"typ": 5.6,
"max": 5.88,
"conditions": "@ IZT = 66.9 mA; measured at 25 °C ambient (Note 2)",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum Zener impedance",
"symbol": "ZZT",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 2,
"conditions": "@ IZT = 66.9 mA; Iz(AC) = 0.1 Iz(DC), 60 Hz (Note 3)",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum Zener impedance at knee current",
"symbol": "ZZK",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 250,
"conditions": "@ IZK = 1 mA",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Reverse leakage current",
"symbol": "IR",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 5,
"conditions": "@ VR = 3 V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum DC Zener current",
"symbol": "IZM",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 267,
"conditions": "DC",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Forward voltage",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1.5,
"conditions": "@ IF = 200 mA (DC), for all types",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Zener voltage tolerance (B suffix)",
"symbol": "",
"kind": "tolerance",
"unit": "%",
"min": -5,
"typ": null,
"max": 5,
"conditions": "Type number designation B = 5% (Note 1)",
"source_page": 1,
"source": "datasheet"
},
{
"name": "DC power dissipation at lead temperature",
"symbol": "PD",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 3,
"conditions": "TL = 75 °C, measured at zero lead length (Note 1)",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Derating of DC power dissipation above TL = 75 °C",
"symbol": "PD",
"kind": "thermal",
"unit": "mW/°C",
"min": null,
"typ": 40,
"max": null,
"conditions": "Above TL = 75 °C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum steady state power dissipation",
"symbol": "PD",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 550,
"conditions": "TA = 25 °C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Derating of steady state power dissipation above 25 °C",
"symbol": "PD",
"kind": "thermal",
"unit": "mW/°C",
"min": null,
"typ": 4.4,
"max": null,
"conditions": "Above TA = 25 °C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Junction to ambient thermal resistance",
"symbol": "RthJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 226,
"max": null,
"conditions": "Junction to ambient",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Junction to lead thermal resistance",
"symbol": "RthJL",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 25,
"max": null,
"conditions": "Junction to lead",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Junction temperature range",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"1smb5919b"
],
"discovery_pitch": "1SMB5919B (OTW) 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",
"1smb5919b.kicad_sym",
"1smb5919b.kicad_mod",
"1smb5919b.glb",
"1smb5919b.step",
"1smb5919b.lbr",
"docs/hero.png",
"docs/1smb5919b-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"1smb5919b-hero.glb",
"1smb5919b-hero.overlay.json",
"1smb5919b-etched.glb"
],
"visibility": {
"public": true
}
}