component
MCP121T-240E
Public Made by Adomby adom
Microchip Tech Supervisor And Reset ICs, SC-70-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475
{
"schema_version": 1,
"type": "component",
"slug": "mcp121t-240e",
"title": "MCP121T-240E",
"brief": "Microchip Tech Supervisor And Reset ICs, SC-70-3. 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)",
"mcp121t-240e",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "MCP121T-240E",
"manufacturer": "Microchip Tech",
"package": "SC-70-3",
"pin_count": 3,
"category": "Power Management (PMIC)",
"subcategory": "Supervisor And Reset ICs",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589799056781848576",
"parts": {
"symbol": "mcp121t-240e.kicad_sym",
"footprint": "mcp121t-240e.kicad_mod",
"model_3d": "mcp121t-240e-hero.glb",
"model_3d_plain": "mcp121t-240e-etched.glb",
"model_3d_step": "mcp121t-240e-etched.step",
"model_3d_step_plain": "mcp121t-240e.step",
"lbr": "mcp121t-240e.lbr"
},
"distributor_links": {
"lcsc": "C625183"
},
"distributor_check": {
"checked_at": "2026-10-15T18:28:37Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "RST",
"type": "output",
"description": "Active-low open-drain reset output that is driven low when VDD falls below VTRIP; the MCP121 requires an external pull-up resistor."
},
{
"number": "2",
"name": "VDD",
"type": "power_in",
"description": "Positive power supply input; the specified operating voltage range is 1.0 V to 5.5 V."
},
{
"number": "3",
"name": "VSS",
"type": "power_in",
"description": "Ground reference pin for the device."
}
],
"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-to-function mapping for MCP121 was taken from the garbled Table 3-1 on page 12 and cross-checked; The SC70 orderable part for this MPN is MCP121T-240E/LB (page 16 marking table, 3-Lead SC70 section); The datasheet does not state a dedicated pin-level electrical limit for RST beyond the absolute maxi"
],
"pages_sent": 13,
"cost_usd": 0.0453,
"at": "2026-10-15T18:28:15"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589799056781848576",
"pages": 28,
"sha256": "46a5e4721c4ef577",
"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": "mcp121t-240e.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.1,
2,
1.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "acbf75a28fe41aa90efb38cd2b78220968d6eb6ebae1625dfd532dbeb268fece",
"checked": "2026-10-15",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "mcp121t-240e-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.1,
2,
1.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "4d4d955d8978efcf4e777514d731e0c7837d737e7f5ff724dc58a4d9bc584c0a",
"checked": "2026-10-15",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "SC-70-3",
"Category": "Power Management (PMIC)",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "46a5e4721c4ef5775136a6f362868293fd3d80d6f044164fbf57d1c73f70dd76",
"rows": [
{
"name": "Operating Voltage Range",
"symbol": "VDD",
"kind": "recommended_operating",
"unit": "V",
"min": 1,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Specified VDD Value to RST low",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 1,
"typ": null,
"max": null,
"conditions": "IRST = 10 µA, VRST < 0.2V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Operating Current (MCP121), Reset Power-up Timer Inactive",
"symbol": "IDD",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1.75,
"conditions": "Reset Power-up Timer (tRPU) Inactive",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Operating Current (MCP121), Reset Power-up Timer Active",
"symbol": "IDD",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 20,
"conditions": "Reset Power-up Timer (tRPU) Active",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VDD Trip Point MCP1XX-240",
"symbol": "VTRIP",
"kind": "electrical",
"unit": "V",
"min": 2.285,
"typ": 2.32,
"max": 2.355,
"conditions": "TA = +25°C (Note 1)",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VDD Trip Point MCP1XX-240",
"symbol": "VTRIP",
"kind": "electrical",
"unit": "V",
"min": 2.262,
"typ": 2.32,
"max": 2.378,
"conditions": "Note 2",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Threshold Hysteresis MCP1XX-240",
"symbol": "VHYS",
"kind": "electrical",
"unit": "V",
"min": 0.023,
"typ": null,
"max": 0.139,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "RST Low-level Output Voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.4,
"conditions": "IOL = 500 µA, VDD = VTRIP(MIN)",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Open-drain High Voltage on Output (MCP121 only)",
"symbol": "VODH",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 13.5,
"conditions": "VDD = 3.0V, Time voltage > 5.5V applied 100s, current into pin limited to 2 mA, 25°C operation recommended (Note 5, Note 6)",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VDD Detect to RST Inactive (Reset Power-up Timer)",
"symbol": "tRPU",
"kind": "timing",
"unit": "ms",
"min": 80,
"typ": 120,
"max": 180,
"conditions": "Figure 1-1 and CL = 50 pF",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VDD Trip Point Tempco",
"symbol": "TTPCO",
"kind": "temperature_coefficient",
"unit": "ppm/°C",
"min": -100,
"typ": null,
"max": 100,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Specified Temperature Range (except MCP1XX-195)",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "Except MCP1XX-195",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Maximum Junction Temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Storage Temperature Range",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VDD",
"symbol": "VDD",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input current (VDD)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output current (RST)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Rated Rise Time of VDD",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V/µs",
"min": null,
"typ": null,
"max": 100,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "All inputs and outputs (except RST) w.r.t. VSS",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.6,
"typ": null,
"max": null,
"conditions": "Upper limit printed as (VDD + 1.0V)",
"source_page": 3,
"source": "datasheet"
},
{
"name": "RST output w.r.t. VSS",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.6,
"typ": null,
"max": 13.5,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Ambient temperature with power applied",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "ESD protection on all pins",
"symbol": "",
"kind": "absolute_maximum",
"unit": "kV",
"min": 2,
"typ": null,
"max": null,
"conditions": "ESD protection on all pins",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Thermal Resistance, 3L-SC70",
"symbol": "θJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 335,
"max": null,
"conditions": "3L-SC70 package",
"source_page": 5,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"mcp121t-240e"
],
"discovery_pitch": "MCP121T-240E (Microchip Tech) 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",
"mcp121t-240e.kicad_sym",
"mcp121t-240e.kicad_mod",
"mcp121t-240e.glb",
"mcp121t-240e.step",
"mcp121t-240e.lbr",
"docs/hero.png",
"docs/mcp121t-240e-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"mcp121t-240e-hero.glb",
"mcp121t-240e-hero.overlay.json",
"mcp121t-240e-etched.glb"
],
"visibility": {
"public": true
}
}