component
BZX84-B43
Public Made by Adomby adom
Nexperia Zener Diodes, SOT-23(TO-236AB). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
Set visibility: public
f772c95
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463
{
"schema_version": 1,
"type": "component",
"slug": "bzx84-b43",
"title": "BZX84-B43",
"brief": "Nexperia Zener Diodes, SOT-23(TO-236AB). 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",
"bzx84-b43",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "BZX84-B43",
"manufacturer": "Nexperia",
"package": "SOT-23(TO-236AB)",
"pin_count": 3,
"category": "Diodes",
"subcategory": "Zener Diodes",
"datasheet": "https://assets.nexperia.com/documents/data-sheet/BZX84-B43.pdf",
"parts": {
"symbol": "bzx84-b43.kicad_sym",
"footprint": "bzx84-b43.kicad_mod",
"model_3d": "bzx84-b43-hero.glb",
"model_3d_plain": "bzx84-b43.glb",
"model_3d_step": "bzx84-b43-etched.step",
"model_3d_step_plain": "bzx84-b43.step",
"lbr": "bzx84-b43.lbr"
},
"distributor_links": {
"lcsc": "C550921",
"digikey": "4878-BZX84B43CT-ND",
"mouser": "637-BZX84B43"
},
"distributor_check": {
"checked_at": "2026-11-13T07:01:02Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "4878-BZX84B43CT-ND",
"status": "found"
},
"mouser": {
"pn": "637-BZX84B43",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "A",
"type": "passive",
"description": "Anode of the voltage regulator diode; the datasheet limits the device forward current IF to 200 mA maximum (Table 5)."
},
{
"number": "2",
"name": "n.c.",
"type": "unconnected",
"description": "Not connected; the pinning table lists this pin as not connected."
},
{
"number": "3",
"name": "K",
"type": "passive",
"description": "Cathode of the voltage regulator diode; for BZX84-B43 the working voltage VZ is 42.10 V minimum to 43.90 V maximum at IZ = 2 mA (Table 9)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-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 is a series datasheet covering BZX84-A/B/C. The pinout is given once for the whole ser; The datasheet does not state electrical pin types. Anode and cathode are typed as 'passive', which i; The cathode description uses the B43 working-voltage row from Table 9 (page 7). The anode descriptio"
],
"pages_sent": 14,
"cost_usd": 0.0034,
"at": "2026-11-13T07:00:51"
},
"datasheet": {
"url": "https://assets.nexperia.com/documents/data-sheet/BZX84-B43.pdf",
"pages": 14,
"sha256": "e6278027e055c1b0",
"source_tier": "mfr"
},
"cad": "land: KiCad official (CC-BY-SA 4.0); 3D: generated from the datasheet",
"model_3d_generated": {
"generator": "factory/gen_pkg3d.py",
"family": "SOT",
"height_mm": 1,
"height_basis": "datasheet A, midpoint of min and max",
"standoff_mm": 0.05,
"standoff_basis": "family nominal (no datasheet A1 read)",
"lead_width_mm": 0.36,
"lead_width_basis": "default: 0.6 x pad width across the lead, at most 0.45 x pitch 1.90 mm; a tab 0.9 x its width (no datasheet b read)",
"lead_thickness_mm": 0.2,
"lead_thickness_basis": "default for pitch 1.90 mm, height 1 mm (no datasheet c read)"
},
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "bzx84-b43.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.3,
2.9,
1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "9e483fc68142d214b5a64b58e1fc464213dd776a6fd7d52d765249e8644d75a2",
"checked": "2026-11-13",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bzx84-b43-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.3,
2.9,
1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "73f13a6ef62660b407c4d1c0bec38f1c009efe1bb11726e34c645277c5133523",
"checked": "2026-11-13",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "SOT23 (TO-236AB)",
"source_page": 10,
"D": {
"nom_mm": 2.9,
"range_mm": [
2.8,
3
]
},
"E1": {
"nom_mm": 1.3,
"range_mm": [
1.2,
1.4
]
},
"E": {
"nom_mm": 2.3,
"range_mm": [
2.1,
2.5
]
},
"e": {
"nom_mm": 1.9,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1,
"range_mm": [
0.9,
1.1
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "bzx84-b43.step",
"verdict": "PASS",
"reasons": [
"height and body within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
},
"metadata": {
"specs": {
"Manufacturer": "Nexperia",
"Package": "SOT-23(TO-236AB)",
"Category": "Diodes",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "e6278027e055c1b077d2fb733903d60f3fd66724e45a310a7501c69edb99ddb9",
"rows": [
{
"name": "Working voltage (nominal, type 43)",
"symbol": "VZ",
"kind": "electrical",
"unit": "V",
"min": 42.1,
"typ": 43,
"max": 43.9,
"conditions": "IZ = 2 mA; Tj = 25 °C (BZX84-B row, Table 9)",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Working voltage tolerance (B series)",
"symbol": "",
"kind": "tolerance",
"unit": "%",
"min": -2,
"typ": null,
"max": 2,
"conditions": "BZX84-B E24 series tolerance ±2 %",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum differential resistance",
"symbol": "rdif",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 375,
"conditions": "IZ = 0.5 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Maximum differential resistance",
"symbol": "rdif",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 150,
"conditions": "IZ = 2 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Reverse current",
"symbol": "IR",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 0.05,
"conditions": "Max VR column = 30.1 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Temperature coefficient",
"symbol": "SZ",
"kind": "temperature_coefficient",
"unit": "mV/K",
"min": 37.6,
"typ": null,
"max": 46.6,
"conditions": "IZ = 2 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Diode capacitance",
"symbol": "Cd",
"kind": "electrical",
"unit": "pF",
"min": null,
"typ": null,
"max": 40,
"conditions": "f = 1 MHz; VR = 0 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Non-repetitive peak reverse current",
"symbol": "IZSM",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": null,
"max": 0.6,
"conditions": "tp = 100 μs; square wave; Tj = 25 °C",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Forward voltage",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.9,
"conditions": "IF = 10 mA; pulse test tp ≤ 100 μs; δ ≤ 0.02",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Forward current",
"symbol": "IF",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 200,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Non-repetitive peak reverse power dissipation",
"symbol": "PZSM",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 40,
"conditions": "tp = 100 μs; square wave; Tj = 25 °C prior to surge",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Total power dissipation",
"symbol": "Ptot",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 250,
"conditions": "Tamb ≤ 25 °C; FR4 PCB, standard footprint",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction temperature",
"symbol": "Tj",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Ambient temperature",
"symbol": "Tamb",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Thermal resistance junction to ambient",
"symbol": "Rth(j-a)",
"kind": "thermal",
"unit": "K/W",
"min": null,
"typ": null,
"max": 500,
"conditions": "in free air; FR4 PCB, single-sided 70 µm copper, standard footprint",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Thermal resistance junction to solder point",
"symbol": "Rth(j-sp)",
"kind": "thermal",
"unit": "K/W",
"min": null,
"typ": null,
"max": 330,
"conditions": "soldering point of cathode tab",
"source_page": 4,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"bzx84-b43"
],
"discovery_pitch": "BZX84-B43 (Nexperia) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"bzx84-b43.kicad_sym",
"bzx84-b43.kicad_mod",
"bzx84-b43.glb",
"bzx84-b43.step",
"bzx84-b43.lbr",
"docs/hero.png",
"docs/bzx84-b43-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"bzx84-b43-hero.glb",
"bzx84-b43-hero.overlay.json"
],
"visibility": {
"public": true
}
}