component
BDX53B
Public Made by Adomby adom
STMicroelectronics Bipolar Transistors - BJT, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "bdx53b",
"title": "BDX53B",
"brief": "STMicroelectronics Bipolar Transistors - BJT, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"extractor-text"
],
"component": {
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"subcategory": "Bipolar Transistors - BJT",
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"parts": {
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"footprint": "bdx53b.kicad_mod",
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"model_3d_plain": "bdx53b-etched.glb",
"model_3d_step": "bdx53b-etched.step",
"model_3d_step_plain": "bdx53b.step",
"lbr": "bdx53b.lbr"
},
"distributor_links": {
"lcsc": "C5199061",
"digikey": "497-7182-5-ND",
"mouser": "511-BDX53B"
},
"distributor_check": {
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"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "497-7182-5-ND",
"status": "found",
"lifecycle": "Active"
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"mouser": {
"pn": "511-BDX53B",
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},
"pins": [
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"name": "B",
"type": "input",
"description": "Base of the NPN Darlington (BDX53B); emitter-base voltage limited to 5 V (VEBO) and base current to 0.2 mA per Table 2."
},
{
"number": "2",
"name": "C",
"type": "passive",
"description": "Collector (also connected to the mounting tab); VCBO and VCEO are 80 V for BDX53B, with collector current up to 8 A continuous and 12 A peak."
},
{
"number": "3",
"name": "E",
"type": "passive",
"description": "Emitter of the Darlington, with an integrated antiparallel collector-emitter diode (VF up to 2.5 V at IF = 3 A)."
}
],
"provenance": {
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"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": [
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"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 7,
"cost_usd": 0.1878,
"at": "2026-10-23T03:39:00"
},
"datasheet": {
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"pages": 7,
"sha256": "3b8956304ef88eac",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "body on z = 0, through-hole leads below",
"extents_mm": [
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"zmin_mm": -9.75,
"centre_offset_mm": 0.932,
"footprint_binding": "identity",
"sha256": "7cb065d935df5771f0ba6e48ddd180863a121af76483dad7f18e667a7b68204a",
"checked": "2026-10-23",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bdx53b-etched.step",
"role": "eda",
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"units": "mm",
"origin": "footprint origin = pad-pattern centre",
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},
"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "TO-220",
"Category": "Triode/MOS Tube/Transistor",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "3b8956304ef88eac1b300ced8147ec4fdbedcbab03645ce68f8d6d68d72fd2c8",
"rows": [
{
"name": "Collector-emitter sustaining voltage",
"symbol": "VCEO(sus)",
"kind": "electrical",
"unit": "V",
"min": 80,
"typ": null,
"max": null,
"conditions": "IC = 100 mA, IB = 0, pulsed 300 µs, duty 1.5%, BDX53B",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Collector cut-off current",
"symbol": "ICBO",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 0.2,
"conditions": "VCB = 80 V, IE = 0, BDX53B",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Collector cut-off current",
"symbol": "ICEO",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "VCE = 40 V, IB = 0, BDX53B",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Emitter cut-off current",
"symbol": "IEBO",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 2,
"conditions": "VEB = 5 V, IC = 0",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Collector-emitter saturation voltage",
"symbol": "VCE(sat)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 2,
"conditions": "IC = 3 A; IB = 12 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Base-emitter saturation voltage",
"symbol": "VBE(sat)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 2.5,
"conditions": "IC = 3 A; IB = 12 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "DC current gain",
"symbol": "hFE",
"kind": "electrical",
"unit": "",
"min": 750,
"typ": null,
"max": null,
"conditions": "IC = 3 A; VCE = 3 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Diode forward voltage",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 2.5,
"conditions": "IF = 3 A; IF = 8 A",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Collector-base voltage",
"symbol": "VCBO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 80,
"conditions": "IE = 0",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Collector-emitter voltage",
"symbol": "VCEO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 80,
"conditions": "IB = 0",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Emitter-base voltage",
"symbol": "VEBO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 5,
"conditions": "IC = 0",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Collector current",
"symbol": "IC",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 8,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Collector peak current (repetitive)",
"symbol": "ICM",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 12,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Base current",
"symbol": "IB",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 0.2,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Total dissipation",
"symbol": "PTOT",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 60,
"conditions": "Tc = 25°C",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Max. operating junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
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"breadcrumbs",
"info"
],
"discovery_triggers": [
"bdx53b"
],
"discovery_pitch": "BDX53B (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
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"visibility": {
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}