component
TL431KA-TP
Public Made by Adomby adom
MCC(Micro Commercial Components) Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415
{
"schema_version": 1,
"type": "component",
"slug": "tl431ka-tp",
"title": "TL431KA-TP",
"brief": "MCC(Micro Commercial Components) Voltage Reference, SOT-23. 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",
"power management (pmic)",
"tl431ka-tp",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "TL431KA-TP",
"manufacturer": "MCC(Micro Commercial Components)",
"package": "SOT-23",
"pin_count": 3,
"category": "Power Management (PMIC)",
"subcategory": "Voltage Reference",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603411969688805376",
"parts": {
"symbol": "tl431ka-tp.kicad_sym",
"footprint": "tl431ka-tp.kicad_mod",
"model_3d": "tl431ka-tp-hero.glb",
"model_3d_plain": "tl431ka-tp-etched.glb",
"model_3d_step": "tl431ka-tp-etched.step",
"model_3d_step_plain": "tl431ka-tp.step",
"lbr": "tl431ka-tp.lbr"
},
"distributor_links": {
"lcsc": "C22235735"
},
"distributor_check": {
"checked_at": "2026-10-17T17:40:40Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "REF",
"type": "input",
"description": "Reference input that sets the regulated cathode voltage through the R1/R2 divider; the datasheet gives a reference output voltage of 2.483 to 2.507 V at VKA=VREF and IKA=10 mA, with reference input current of 1.5 µA typical and 4.0 µA maximum."
},
{
"number": "2",
"name": "K",
"type": "passive",
"description": "Cathode is the shunt sink terminal, rated for a cathode voltage up to 36 V and a cathode current range of 1.0 to 100 mA."
},
{
"number": "3",
"name": "A",
"type": "passive",
"description": "Anode is the common terminal of the shunt regulator, and the datasheet gives no separate voltage or current limit for this pin."
}
],
"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: Pin mapping is taken from the SOT-23 package drawing on page 1: 1 = REF, 2 = K (cathode), 3 = A (ano; Ordering information (page 7) lists the part as TL431KA-TP, Tape & Reel 3Kpcs/Reel, and does not res; The datasheet gives no electrical limit specific to the anode pin (A); its description is limited to"
],
"pages_sent": 8,
"cost_usd": 0.0239,
"at": "2026-10-17T17:38:56"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603411969688805376",
"pages": 8,
"sha256": "152ebf0ea9e81727",
"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": "tl431ka-tp.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": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "tl431ka-tp-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": "215f0da3dfeb37e89ef4e7815ec6811b5de5f94fdf098578873502d24f40a281",
"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "MCC(Micro Commercial Components)",
"Package": "SOT-23",
"Category": "Power Management (PMIC)",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "152ebf0ea9e817272d408d7abf7fca4f6395cc0fe2a2dfc5358e034cd91d1ee0",
"rows": [
{
"name": "Reference output voltage",
"symbol": "Vref",
"kind": "electrical",
"unit": "V",
"min": 2.483,
"typ": 2.495,
"max": 2.507,
"conditions": "VKA=VREF, IKA=10mA",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Deviation of reference input voltage over temperature",
"symbol": "△Vref / △T",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 4.5,
"max": 17,
"conditions": "VKA=VREF, IKA=10mA, Tmin≤Ta≤Tmax",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Ratio of change in reference input voltage to cathode voltage (10V to Vref)",
"symbol": "△Vref / △VKA",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": -1,
"max": -2.7,
"conditions": "△VKA=10V~Vref",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Ratio of change in reference input voltage to cathode voltage (36V to 10V)",
"symbol": "△Vref / △VKA",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": -0.5,
"max": -2,
"conditions": "△VKA=36V~10V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Reference input current",
"symbol": "Iref",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 1.5,
"max": 4,
"conditions": "IKA=10mA, R1=10KΩ, R2=∞",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Deviation of reference input current over full temperature range",
"symbol": "△Iref / △T",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 0.4,
"max": 1.2,
"conditions": "IKA=10mA, R1=10KΩ, R2=∞, TA=full temperature",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Minimum cathode current for regulation",
"symbol": "IKA(min)",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.45,
"max": 1,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Off-state cathode current",
"symbol": "IKA(off)",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 0.05,
"max": 0.5,
"conditions": "VKA=40V, VREF=0V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Dynamic impedance",
"symbol": "ZKA",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 0.15,
"max": 0.5,
"conditions": "IKA=1 to 100mA, f≤1.0KHz",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Cathode voltage (recommended operating)",
"symbol": "VKA",
"kind": "recommended_operating",
"unit": "V",
"min": null,
"typ": null,
"max": 36,
"conditions": "Minimum printed as VREF (symbol, no numeric value)",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Cathode current range (recommended operating)",
"symbol": "IK",
"kind": "recommended_operating",
"unit": "mA",
"min": 1,
"typ": null,
"max": 100,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Reference input current range (recommended operating)",
"symbol": "IREF",
"kind": "recommended_operating",
"unit": "mA",
"min": 0.05,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Operating temperature",
"symbol": "Topr",
"kind": "recommended_operating",
"unit": "℃",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Cathode voltage (absolute maximum)",
"symbol": "VKA",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 37,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Cathode current range (absolute maximum)",
"symbol": "IK",
"kind": "absolute_maximum",
"unit": "mA",
"min": -100,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Power dissipation",
"symbol": "PD",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 0.3,
"conditions": "at 25℃",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "℃",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Thermal resistance junction to ambient",
"symbol": "RθJA",
"kind": "thermal",
"unit": "℃/W",
"min": null,
"typ": null,
"max": 417,
"conditions": "",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"tl431ka-tp"
],
"discovery_pitch": "TL431KA-TP (MCC(Micro Commercial Components)) 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",
"tl431ka-tp.kicad_sym",
"tl431ka-tp.kicad_mod",
"tl431ka-tp.glb",
"tl431ka-tp.step",
"tl431ka-tp.lbr",
"docs/hero.png",
"docs/tl431ka-tp-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"tl431ka-tp-hero.glb",
"tl431ka-tp-hero.overlay.json",
"tl431ka-tp-etched.glb"
],
"visibility": {
"public": true
}
}