component
TL431AQDBVRQ1
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489
{
"schema_version": 1,
"type": "component",
"slug": "tl431aqdbvrq1",
"title": "TL431AQDBVRQ1",
"brief": "Texas Instruments Voltage Reference, SOT-23-5. 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)",
"tl431aqdbvrq1",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "TL431AQDBVRQ1",
"manufacturer": "Texas Instruments",
"package": "SOT-23-5",
"pin_count": 5,
"category": "Power Management (PMIC)",
"subcategory": "Voltage Reference",
"datasheet": "https://www.ti.com/lit/ds/symlink/tl431-q1.pdf",
"parts": {
"symbol": "tl431aqdbvrq1.kicad_sym",
"footprint": "tl431aqdbvrq1.kicad_mod",
"model_3d": "tl431aqdbvrq1-hero.glb",
"model_3d_plain": "tl431aqdbvrq1-etched.glb",
"model_3d_step": "tl431aqdbvrq1-etched.step",
"model_3d_step_plain": "tl431aqdbvrq1.step",
"lbr": "tl431aqdbvrq1.lbr"
},
"distributor_links": {
"lcsc": "C91733",
"digikey": "296-23433-2-ND",
"mouser": "595-TL431AQDBVRQ1"
},
"distributor_check": {
"checked_at": "2026-11-06T02:17:41Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-23433-2-ND",
"status": "found"
},
"mouser": {
"pn": "595-TL431AQDBVRQ1",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "NC",
"type": "unconnected",
"description": "No connection."
},
{
"number": "2",
"name": "NC",
"type": "unconnected",
"description": "Pin 2 is connected internally to ANODE (die substrate) and must be left floating or connected to ANODE."
},
{
"number": "3",
"name": "CATHODE",
"type": "passive",
"description": "Shunt current or voltage input; the recommended cathode current for TL431xA-Q1 is 0.7 mA to 100 mA and the cathode voltage is VREF to 36 V."
},
{
"number": "4",
"name": "REF",
"type": "input",
"description": "Threshold relative to common anode; reference input current is limited to -50 µA (low) and 10 mA (high) in absolute maximum ratings."
},
{
"number": "5",
"name": "ANODE",
"type": "power_in",
"description": "Common pin, normally connected to ground."
}
],
"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 lists the ANODE pin as I/O type 'O' (output). It is mapped to power_in here because th"
],
"pages_sent": 9,
"cost_usd": 0.0124,
"at": "2026-11-06T02:17:17"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/tl431-q1.pdf",
"pages": 30,
"sha256": "e1937a2597007ea8",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 5,
"described": 5,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "tl431aqdbvrq1.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.8,
2.9,
1.55
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
"checked": "2026-11-06",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "tl431aqdbvrq1-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.8,
2.9,
1.55
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "e169dd92c4e8dfe412001e417d7e3cce9f30eb3b5af641c7f77e0790ad26382f",
"checked": "2026-11-06",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOT-23-5",
"Category": "Power Management (PMIC)",
"Pins": "5"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "e1937a2597007ea83ab73d06cc7537f828e381a7553651f3981e86f163436b15",
"rows": [
{
"name": "Reference voltage",
"symbol": "VREF",
"kind": "electrical",
"unit": "mV",
"min": 2470,
"typ": 2495,
"max": 2520,
"conditions": "VKA = VREF, IKA = 10 mA, see Figure 20",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Deviation of reference voltage over full temperature",
"symbol": "VI(DEV)",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 14,
"max": 34,
"conditions": "VKA = VREF, IKA = 10 mA, TA = –40°C to 125°C, see Figure 20",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Ratio of change in reference voltage to change in cathode voltage",
"symbol": "ΔVREF/ΔVKA",
"kind": "electrical",
"unit": "mV/V",
"min": null,
"typ": -1.4,
"max": -2.7,
"conditions": "IKA = 10 mA, ΔVKA = 10 V – VREF, see Figure 21",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Ratio of change in reference voltage to change in cathode voltage",
"symbol": "ΔVREF/ΔVKA",
"kind": "electrical",
"unit": "mV/V",
"min": null,
"typ": -1,
"max": -2,
"conditions": "IKA = 10 mA, ΔVKA = 36 V – 10 V, see Figure 21",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Reference current",
"symbol": "IREF",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 2,
"max": 4,
"conditions": "IKA = 10 mA, R1 = 10 kΩ, R2 = ∞, see Figure 21",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Deviation of reference current over full temperature",
"symbol": "II(DEV)",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.8,
"max": 2.5,
"conditions": "IKA = 10 mA, R1 = 10 kΩ, R2 = ∞, TA = –40°C to 125°C, see Figure 21",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Minimum cathode current for regulation",
"symbol": "IMIN",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.4,
"max": 0.7,
"conditions": "VKA = VREF, see Figure 20",
"source_page": 5,
"source": "datasheet"
},
{
"name": "OFF-state cathode current",
"symbol": "IOFF",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.1,
"max": 0.5,
"conditions": "VKA = 36 V, VREF = 0, see Figure 22",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Dynamic impedance",
"symbol": "|ZKA|",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 0.2,
"max": 0.5,
"conditions": "IKA = 1 mA to 100 mA, VKA = VREF, f ≤ 1 kHz, see Figure 20",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Cathode voltage",
"symbol": "VKA",
"kind": "recommended_operating",
"unit": "V",
"min": null,
"typ": null,
"max": 36,
"conditions": "Minimum given as VREF",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Cathode current (TL431xA-Q1)",
"symbol": "IKA",
"kind": "recommended_operating",
"unit": "mA",
"min": 0.7,
"typ": null,
"max": 100,
"conditions": "TL431xA-Q1",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating free-air temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Cathode voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 37,
"conditions": "Voltage values with respect to ANODE",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Continuous cathode current",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": -100,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Reference input current, low",
"symbol": "",
"kind": "absolute_maximum",
"unit": "µA",
"min": -50,
"typ": null,
"max": null,
"conditions": "Low",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Reference input current, high",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 10,
"conditions": "High",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"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": "Junction-to-ambient thermal resistance (DBV, SOT-23 5-pin)",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 215,
"max": null,
"conditions": "DBV (SOT-23), 5 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-case (top) thermal resistance (DBV, SOT-23 5-pin)",
"symbol": "RθJC(top)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 135.2,
"max": null,
"conditions": "DBV (SOT-23), 5 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-board thermal resistance (DBV, SOT-23 5-pin)",
"symbol": "RθJB",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 43,
"max": null,
"conditions": "DBV (SOT-23), 5 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-top characterization parameter (DBV, SOT-23 5-pin)",
"symbol": "ψJT",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 19.6,
"max": null,
"conditions": "DBV (SOT-23), 5 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-board characterization parameter (DBV, SOT-23 5-pin)",
"symbol": "ψJB",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 42.1,
"max": null,
"conditions": "DBV (SOT-23), 5 pins",
"source_page": 4,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"tl431aqdbvrq1"
],
"discovery_pitch": "TL431AQDBVRQ1 (Texas Instruments) 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",
"tl431aqdbvrq1.kicad_sym",
"tl431aqdbvrq1.kicad_mod",
"tl431aqdbvrq1.glb",
"tl431aqdbvrq1.step",
"tl431aqdbvrq1.lbr",
"docs/hero.png",
"docs/tl431aqdbvrq1-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"tl431aqdbvrq1-hero.glb",
"tl431aqdbvrq1-hero.overlay.json",
"tl431aqdbvrq1-etched.glb"
],
"visibility": {
"public": true
}
}