component
MCP4451T-503E
Public Made by Adomby adom
Microchip Tech Digital Potentiometers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264
{
"slug": "mcp4451t-503e",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Digital Potentiometers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"data acquisition",
"mcp4451t-503e",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"mcp4451t-503e.kicad_sym",
"mcp4451t-503e.kicad_mod",
"mcp4451t-503e.glb",
"mcp4451t-503e.step",
"mcp4451t-503e.lbr",
"docs/hero.png",
"docs/mcp4451t-503e-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"mcp4451t-503e-hero.glb",
"mcp4451t-503e-hero.overlay.json",
"mcp4451t-503e-etched.glb"
],
"component": {
"mpn": "MCP4451T-503E",
"manufacturer": "Microchip Tech",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Data Acquisition",
"subcategory": "Digital Potentiometers",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/db849d610d714455bbfc81058c4fb819.pdf",
"parts": {
"symbol": "mcp4451t-503e.kicad_sym",
"footprint": "mcp4451t-503e.kicad_mod",
"model_3d": "mcp4451t-503e-hero.glb",
"model_3d_plain": "mcp4451t-503e-etched.glb",
"model_3d_step": "mcp4451t-503e-etched.step",
"model_3d_step_plain": "mcp4451t-503e.step",
"lbr": "mcp4451t-503e.lbr"
},
"distributor_links": {
"lcsc": "C627257"
},
"distributor_check": {
"checked_at": "2026-10-16T21:31:17Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "P3A",
"type": "passive",
"description": "Potentiometer 3 terminal A, the full-scale end of resistor network 3, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "2",
"name": "P3W",
"type": "passive",
"description": "Potentiometer 3 wiper terminal, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "3",
"name": "P3B",
"type": "passive",
"description": "Potentiometer 3 terminal B, the zero-scale end of resistor network 3, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "4",
"name": "HVC/A0",
"type": "input",
"description": "Multiplexed High Voltage Command and I2C Address 0 input, latched at POR/BOR; it is high-voltage tolerant with a Schmitt trigger and has an internal pull-up."
},
{
"number": "5",
"name": "SCL",
"type": "input",
"description": "I2C serial clock input, high-voltage tolerant with Schmitt trigger, which accepts only external clock signals since the device is a slave and does not stretch the clock."
},
{
"number": "6",
"name": "SDA",
"type": "bidirectional",
"description": "I2C serial data I/O, an open-drain N-channel driver that is high-voltage tolerant with Schmitt trigger input."
},
{
"number": "7",
"name": "VSS",
"type": "power_in",
"description": "Device ground reference, to which the VDD input supply is relative."
},
{
"number": "8",
"name": "P1B",
"type": "passive",
"description": "Potentiometer 1 terminal B, the zero-scale end of resistor network 1, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "9",
"name": "P1W",
"type": "passive",
"description": "Potentiometer 1 wiper terminal, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "10",
"name": "P1A",
"type": "passive",
"description": "Potentiometer 1 terminal A, the full-scale end of resistor network 1, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "11",
"name": "P0A",
"type": "passive",
"description": "Potentiometer 0 terminal A, the full-scale end of resistor network 0, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "12",
"name": "P0W",
"type": "passive",
"description": "Potentiometer 0 wiper terminal, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "13",
"name": "P0B",
"type": "passive",
"description": "Potentiometer 0 terminal B, the zero-scale end of resistor network 0, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "No connect pin that is not used; the datasheet says it should be connected to either VDD or VSS."
},
{
"number": "15",
"name": "RESET",
"type": "input",
"description": "Hardware reset input, high-voltage tolerant with Schmitt trigger, which forces the device into the POR/BOR state."
},
{
"number": "16",
"name": "A1",
"type": "input",
"description": "I2C Address 1 input, high-voltage tolerant with Schmitt trigger, which should be static and tied high or low."
},
{
"number": "17",
"name": "VDD",
"type": "power_in",
"description": "Positive power supply input relative to VSS; electrical performance may not meet data sheet specifications while VDD is below 2.7V."
},
{
"number": "18",
"name": "P2B",
"type": "passive",
"description": "Potentiometer 2 terminal B, the zero-scale end of resistor network 2, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "19",
"name": "P2W",
"type": "passive",
"description": "Potentiometer 2 wiper terminal, which must stay between VSS and VDD and can carry positive or negative current."
},
{
"number": "20",
"name": "P2A",
"type": "passive",
"description": "Potentiometer 2 terminal A, the full-scale end of resistor network 2, which must stay between VSS and VDD and can carry positive or negative current."
}
],
"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 MPN suffix T denotes tape-and-reel ordering only; the datasheet gives no separate pinout for the"
],
"pages_sent": 20,
"cost_usd": 0.0618,
"at": "2026-10-16T21:30:53"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/db849d610d714455bbfc81058c4fb819.pdf",
"pages": 94,
"sha256": "3e69021e45ebc441",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "mcp4451t-503e.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
"checked": "2026-10-16",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "mcp4451t-503e-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "dcbb38eb4de22034e04c3074ceedac0ef219f76a2671a9f93bf2a1c640e928bc",
"checked": "2026-10-16",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}