component
1SMB5952BT3G
Public Made by Adomby adom
onsemi Zener Diodes, SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388
{
"schema_version": 1,
"type": "component",
"slug": "1smb5952bt3g",
"title": "1SMB5952BT3G",
"brief": "onsemi Zener Diodes, SMB. 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",
"diodes",
"1smb5952bt3g",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "1SMB5952BT3G",
"manufacturer": "onsemi",
"package": "SMB",
"pin_count": 2,
"category": "Diodes",
"subcategory": "Zener Diodes",
"datasheet": "https://www.onsemi.com/pdf/datasheet/1smb5952bt3-d.pdf",
"parts": {
"symbol": "1smb5952bt3g.kicad_sym",
"footprint": "1smb5952bt3g.kicad_mod",
"model_3d": "1smb5952bt3g-hero.glb",
"model_3d_plain": "1smb5952bt3g-etched.glb",
"model_3d_step": "1smb5952bt3g-etched.step",
"model_3d_step_plain": "1smb5952bt3g.step",
"lbr": "1smb5952bt3g.lbr"
},
"distributor_links": {
"lcsc": "C236106",
"digikey": "1SMB5952BT3GOSTR-ND",
"mouser": "863-1SMB5952BT3G"
},
"distributor_check": {
"checked_at": "2026-10-22T17:00:32Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1SMB5952BT3GOSTR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "863-1SMB5952BT3G",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "Cathode",
"type": "passive",
"description": "Cathode end of the Zener diode, indicated by the polarity band; reverse Zener voltage VZ is 123.5 V min, 130 V nom, 136.5 V max at IZT = 2.9 mA for the 1SMB5952BT3G."
},
{
"number": "2",
"name": "Anode",
"type": "passive",
"description": "Anode end of the Zener diode; forward voltage VF is 1.5 V max at IF = 200 mA(dc)."
}
],
"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",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet labels only 'Cathode' and 'Anode' on the SMB (CASE 403A) package outline and does not "
],
"pages_sent": 6,
"cost_usd": 0.0722,
"at": "2026-10-22T16:59:33"
},
"datasheet": {
"url": "https://www.onsemi.com/pdf/datasheet/1smb5952bt3-d.pdf",
"pages": 6,
"sha256": "e95f4deeabd8ea97",
"source_tier": "mfr"
},
"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": "1smb5952bt3g.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": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "1smb5952bt3g-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": "a2b906586060eb7f9d26d3bb48cd4442f5e06014bce081066649d565acd4505b",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "onsemi",
"Package": "SMB",
"Category": "Diodes",
"Pins": "2"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "e95f4deeabd8ea97969466e422fea726867007cbc81dc18391a4d93732e9cad0",
"rows": [
{
"name": "Zener Voltage",
"symbol": "VZ",
"kind": "electrical",
"unit": "V",
"min": 123.5,
"typ": 130,
"max": 136.5,
"conditions": "@ IZT = 2.9 mA, TL = 30°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Maximum Zener Impedance",
"symbol": "ZZT",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 450,
"conditions": "@ IZT = 2.9 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Maximum Zener Impedance at knee",
"symbol": "ZZK",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 5000,
"conditions": "@ IZK = 0.25 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Reverse Leakage Current",
"symbol": "IR",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "@ VR = 98.8 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Maximum DC Zener Current",
"symbol": "IZM",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 11,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Forward Voltage",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1.5,
"conditions": "@ IF = 200 mA(dc)",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Zener Voltage Tolerance",
"symbol": "",
"kind": "tolerance",
"unit": "%",
"min": -5,
"typ": null,
"max": 5,
"conditions": "Type numbers listed indicate a tolerance of ±5%",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Test Current",
"symbol": "IZT",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 2.9,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Maximum Steady State Power Dissipation (lead)",
"symbol": "PD",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 3,
"conditions": "@ TL = 75°C, measured at zero lead length",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Power Derating above 75°C",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mW/°C",
"min": null,
"typ": null,
"max": 40,
"conditions": "Derate above 75°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum Steady State Power Dissipation (ambient)",
"symbol": "PD",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 550,
"conditions": "@ TA = 25°C, FR-4 board, recommended footprint",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Power Derating above 25°C",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mW/°C",
"min": null,
"typ": null,
"max": 4.4,
"conditions": "Derate above 25°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Operating and Storage Temperature Range",
"symbol": "TJ, Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Thermal Resistance, Junction-to-Lead",
"symbol": "RθJL",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 25,
"max": null,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Thermal Resistance, Junction-to-Ambient",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 226,
"max": null,
"conditions": "FR-4 board, recommended footprint",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum Lead Temperature for Soldering",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "10 seconds",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"1smb5952bt3g"
],
"discovery_pitch": "1SMB5952BT3G (onsemi) 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",
"1smb5952bt3g.kicad_sym",
"1smb5952bt3g.kicad_mod",
"1smb5952bt3g.glb",
"1smb5952bt3g.step",
"1smb5952bt3g.lbr",
"docs/hero.png",
"docs/1smb5952bt3g-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"1smb5952bt3g-hero.glb",
"1smb5952bt3g-hero.overlay.json",
"1smb5952bt3g-etched.glb"
],
"visibility": {
"public": true
}
}