component
BC817-40
Public Made by Adomby adom
UMW Bipolar (BJT), SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
Publish 0.1.1
b9f663a
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413
{
"schema_version": 1,
"type": "component",
"slug": "bc817-40",
"title": "BC817-40",
"brief": "UMW Bipolar (BJT), SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.1",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"transistors-thyristors",
"bc817-40",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "BC817-40",
"manufacturer": "UMW",
"package": "SOT-23-3",
"pin_count": 3,
"category": "Transistors/Thyristors",
"subcategory": "Bipolar (BJT)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893218427031552",
"parts": {
"symbol": "bc817-40.kicad_sym",
"footprint": "bc817-40.kicad_mod",
"model_3d": "bc817-40-hero.glb",
"model_3d_plain": "bc817-40.glb",
"model_3d_step": "bc817-40-etched.step",
"model_3d_step_plain": "bc817-40.step",
"lbr": "bc817-40.lbr"
},
"distributor_links": {
"lcsc": "C545563"
},
"pins": [
{
"number": "1",
"name": "BASE",
"type": "input",
"description": "Base terminal of NPN transistor; maximum collector-base voltage is 50 V."
},
{
"number": "2",
"name": "EMITTER",
"type": "passive",
"description": "Emitter terminal of NPN transistor; maximum emitter-base voltage is 5 V."
},
{
"number": "3",
"name": "COLLECTOR",
"type": "passive",
"description": "Collector terminal of NPN transistor; maximum collector-emitter voltage is 45 V and maximum continuous collector current is 0.5 A."
}
],
"provenance": {
"extractor": "extract_pins 0.2",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.2",
"primary_model": "claude-haiku-4-5-20251001",
"primary_mode": "text",
"consensus_model": "claude-sonnet-4-6",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [],
"pages_sent": 3,
"cost_usd": 0.0863,
"at": "2026-09-21T17:11:37"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893218427031552",
"pages": 3,
"sha256": "691dd222da71b060",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "bc817-40.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.5,
3,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bc817-40-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.5,
3,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "01a0bf80f47583c1f7c8c927515d1319538d14eb5200cf692ac81d3311e8e11a",
"checked": "2026-11-13",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "UMW",
"Package": "SOT-23-3",
"Category": "Transistors/Thyristors",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "691dd222da71b060",
"rows": [
{
"name": "Collector-base breakdown voltage",
"symbol": "VCBO",
"kind": "electrical",
"unit": "V",
"min": 50,
"typ": null,
"max": null,
"conditions": "IC= 10μA, IE=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-emitter breakdown voltage",
"symbol": "VCEO",
"kind": "electrical",
"unit": "V",
"min": 45,
"typ": null,
"max": null,
"conditions": "IC= 10mA, IB=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Emitter-base breakdown voltage",
"symbol": "VEBO",
"kind": "electrical",
"unit": "V",
"min": 5,
"typ": null,
"max": null,
"conditions": "IE= 1μA, IC=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector cutoff current",
"symbol": "ICBO",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 0.1,
"conditions": "VCB= 45 V, IE=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Emitter cutoff current",
"symbol": "IEBO",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 0.1,
"conditions": "VEB= 4V, IC=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "DC current gain hFE(1)",
"symbol": "hFE(1)",
"kind": "electrical",
"unit": "",
"min": 100,
"typ": null,
"max": 600,
"conditions": "VCE= 1V, IC= 100mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "DC current gain hFE(2)",
"symbol": "hFE(2)",
"kind": "electrical",
"unit": "",
"min": 40,
"typ": null,
"max": null,
"conditions": "VCE= 1V, IC= 500mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-emitter saturation voltage",
"symbol": "VCE(sat)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.7,
"conditions": "IC= 500mA, IB= 50mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Base-emitter saturation voltage",
"symbol": "VBE(sat)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1.2,
"conditions": "IC= 500mA, IB= 50mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Base-emitter voltage",
"symbol": "VBE",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1.2,
"conditions": "VCE= 1 V, IC= 500mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector capacitance",
"symbol": "Cob",
"kind": "electrical",
"unit": "pF",
"min": null,
"typ": null,
"max": 10,
"conditions": "VCB=10V, f=1MHz",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Transition frequency",
"symbol": "fT",
"kind": "electrical",
"unit": "MHz",
"min": 100,
"typ": null,
"max": null,
"conditions": "VCE= 5 V, IC= 10mA, f=100MHz",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-base voltage",
"symbol": "VCBO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 50,
"conditions": "Ta=25℃ unless otherwise noted",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-emitter voltage",
"symbol": "VCEO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 45,
"conditions": "Ta=25℃ unless otherwise noted",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Emitter-base voltage",
"symbol": "VEBO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 5,
"conditions": "Ta=25℃ unless otherwise noted",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector current, continuous",
"symbol": "IC",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "Ta=25℃ unless otherwise noted",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector power dissipation",
"symbol": "PC",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 0.3,
"conditions": "Ta=25℃ unless otherwise noted",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "℃",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "℃",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"bc817-40"
],
"discovery_pitch": "BC817-40 (UMW) component page with datasheet-verified CAD.",
"author": {
"name": "Ray"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"bc817-40.kicad_sym",
"bc817-40.kicad_mod",
"bc817-40.glb",
"bc817-40.step",
"bc817-40.lbr",
"docs/hero.png",
"docs/bc817-40-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"bc817-40-etched.step",
"bc817-40-hero.glb",
"bc817-40-hero.overlay.json"
],
"visibility": "public",
"updated_at": "2026-09-24T17:36:04.474Z",
"description": "UMW Bipolar (BJT), SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
"org": "adom"
}