component
2N5551-TA
Public Made by Adomby adom
Changjing Bipolar (BJT), TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475
{
"schema_version": 1,
"type": "component",
"slug": "2n5551-ta",
"title": "2N5551-TA",
"brief": "Changjing Bipolar (BJT), TO-92. 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",
"transistors-thyristors",
"2n5551-ta",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "2N5551-TA",
"manufacturer": "Changjing",
"package": "TO-92",
"pin_count": 3,
"category": "Transistors/Thyristors",
"subcategory": "Bipolar (BJT)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588896012316786688",
"parts": {
"symbol": "2n5551-ta.kicad_sym",
"footprint": "2n5551-ta.kicad_mod",
"model_3d": "2n5551-ta-hero.glb",
"model_3d_plain": "2n5551-ta-etched.glb",
"model_3d_step": "2n5551-ta-etched.step",
"model_3d_step_plain": "2n5551-ta.step",
"lbr": "2n5551-ta.lbr"
},
"distributor_links": {
"lcsc": "C2083"
},
"distributor_check": {
"checked_at": "2026-10-17T20:04:45Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "EMITTER",
"type": "passive",
"description": "Emitter terminal of the NPN transistor; the datasheet lists it as pin 1 of the TO-92 package and gives an emitter-base breakdown voltage V(BR)EBO of 6 V (IE=10µA, IC=0)."
},
{
"number": "2",
"name": "BASE",
"type": "passive",
"description": "Base terminal of the NPN transistor; the datasheet lists it as pin 2 of the TO-92 package and gives a base-emitter saturation voltage VBE(sat) of 1 V maximum at IC=50mA, IB=5mA."
},
{
"number": "3",
"name": "COLLECTOR",
"type": "passive",
"description": "Collector terminal of the NPN transistor; the datasheet lists it as pin 3 of the TO-92 package and gives a collector-emitter breakdown voltage V(BR)CEO of 160 V (IC=1mA, IB=0)."
}
],
"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 gives only a TO-92 pinout (EMITTER 1, BASE 2, COLLECTOR 3) and does not describe the p; Pin types are set to passive because the datasheet does not assign KiCad ERC classes to the transist; The 'Min Typ Max' table columns in the text are not aligned for several rows (for example hFE(1) and"
],
"pages_sent": 2,
"cost_usd": 0.0156,
"at": "2026-10-17T20:01:59"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588896012316786688",
"pages": 2,
"sha256": "19e29acd5fcb597f",
"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": "2n5551-ta.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "body on z = 0, through-hole leads below",
"extents_mm": [
4.83,
3.745,
9.8
],
"zmin_mm": -2.5,
"centre_offset_mm": 0.542,
"footprint_binding": "identity",
"sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "2n5551-ta-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "body on z = 0, through-hole leads below",
"extents_mm": [
4.83,
3.745,
9.8
],
"zmin_mm": -2.5,
"centre_offset_mm": 0.542,
"footprint_binding": "identity",
"sha256": "f1c8da41c6f45e043f0762aa26630fbe47735913b6e8d9822059b982286185f3",
"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Changjing",
"Package": "TO-92",
"Category": "Transistors/Thyristors",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "19e29acd5fcb597f12b10526feab78f545d24e394cad44e60e76b731c9a652e5",
"rows": [
{
"name": "Collector-base breakdown voltage",
"symbol": "V(BR)CBO",
"kind": "electrical",
"unit": "V",
"min": 180,
"typ": null,
"max": null,
"conditions": "IC=100µA,IE=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-emitter breakdown voltage",
"symbol": "V(BR)CEO",
"kind": "electrical",
"unit": "V",
"min": 160,
"typ": null,
"max": null,
"conditions": "IC=1mA,IB=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Emitter-base breakdown voltage",
"symbol": "V(BR)EBO",
"kind": "electrical",
"unit": "V",
"min": 6,
"typ": null,
"max": null,
"conditions": "IE=10µA,IC=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector cut-off current",
"symbol": "ICBO",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": null,
"max": 50,
"conditions": "VCB=120V,IE=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Emitter cut-off current",
"symbol": "IEBO",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": null,
"max": 50,
"conditions": "VEB=4V,IC=0",
"source_page": 1,
"source": "datasheet"
},
{
"name": "DC current gain hFE(1)",
"symbol": "hFE(1)",
"kind": "electrical",
"unit": "",
"min": 80,
"typ": null,
"max": null,
"conditions": "VCE=5V, IC=1mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "DC current gain hFE(2)",
"symbol": "hFE(2)",
"kind": "electrical",
"unit": "",
"min": 80,
"typ": null,
"max": 300,
"conditions": "VCE=5V, IC=10mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "DC current gain hFE(3)",
"symbol": "hFE(3)",
"kind": "electrical",
"unit": "",
"min": 50,
"typ": null,
"max": null,
"conditions": "VCE=5V, IC=50mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-emitter saturation voltage VCE(sat)(1)",
"symbol": "VCE(sat)(1)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.15,
"conditions": "IC=10mA,IB=1mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-emitter saturation voltage VCE(sat)(2)",
"symbol": "VCE(sat)(2)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.2,
"conditions": "IC=50mA,IB=5mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Base-emitter saturation voltage VBE(sat)(1)",
"symbol": "VBE(sat)(1)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1,
"conditions": "IC=10mA,IB=1mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Base-emitter saturation voltage VBE(sat)(2)",
"symbol": "VBE(sat)(2)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1,
"conditions": "IC=50mA,IB=5mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector output capacitance",
"symbol": "Cob",
"kind": "electrical",
"unit": "pF",
"min": null,
"typ": null,
"max": 6,
"conditions": "VCB=10V,IE=0, f=1MHz",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Emitter input capacitance",
"symbol": "Cib",
"kind": "electrical",
"unit": "pF",
"min": null,
"typ": null,
"max": 20,
"conditions": "VBE=0.5V,IC=0, f=1MHz",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Transition frequency",
"symbol": "fT",
"kind": "electrical",
"unit": "MHz",
"min": 100,
"typ": null,
"max": 300,
"conditions": "VCE=10V,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": 180,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector-emitter voltage",
"symbol": "VCEO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 160,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Emitter-base voltage",
"symbol": "VEBO",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector current",
"symbol": "IC",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Collector power dissipation",
"symbol": "PC",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 625,
"conditions": "",
"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"
},
{
"name": "Thermal resistance from junction to ambient",
"symbol": "RθJA",
"kind": "thermal",
"unit": "℃/W",
"min": null,
"typ": 200,
"max": null,
"conditions": "",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"2n5551-ta"
],
"discovery_pitch": "2N5551-TA (Changjing) 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",
"2n5551-ta.kicad_sym",
"2n5551-ta.kicad_mod",
"2n5551-ta.glb",
"2n5551-ta.step",
"2n5551-ta.lbr",
"docs/hero.png",
"docs/2n5551-ta-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"2n5551-ta-hero.glb",
"2n5551-ta-hero.overlay.json",
"2n5551-ta-etched.glb"
],
"visibility": {
"public": true
}
}