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Ray Set visibility: public 8e97a33 4d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp121t-270e",
  "title": "MCP121T-270E",
  "brief": "Microchip Tech Monitors & Reset Circuits, 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 supply chip",
    "mcp121t-270e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MCP121T-270E",
    "manufacturer": "Microchip Tech",
    "package": "SC-70-3",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Monitors & Reset Circuits",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7ffedb7a0b4f1119d805ceb39796d1d7.pdf",
    "parts": {
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      "footprint": "mcp121t-270e.kicad_mod",
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      "model_3d_step": "mcp121t-270e-etched.step",
      "model_3d_step_plain": "mcp121t-270e.step",
      "lbr": "mcp121t-270e.lbr"
    },
    "distributor_links": {
      "lcsc": "C625184"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:09:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 650 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
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        "name": "RST",
        "type": "output",
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      },
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        "number": "2",
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        "type": "power_in",
        "description": "Positive power supply, operating range 1.0V to 5.5V (absolute maximum 7.0V)."
      },
      {
        "number": "3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference."
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        "primary_mode": "text",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: MCP121 RST is open-drain; schema has no open-collector class, so output was used. Pin 1/2/3 order fo; Package drawing pages (SC70-3 'LB') text is garbled in extraction; the MPN suffix 'E' without '/LB' "
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        "cost_usd": 0.0836,
        "at": "2026-10-22T23:09:11"
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        "pages": 28,
        "sha256": "46a5e4721c4ef577",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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    },
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        "file": "mcp121t-270e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "acbf75a28fe41aa90efb38cd2b78220968d6eb6ebae1625dfd532dbeb268fece",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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        "sha256": "67116320f8e6c2276ebc92e8522c7196f4ea6b617ef1aaec6870116e2cf8e3af",
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SC-70-3",
      "Category": "Power Supply Chip",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "46a5e4721c4ef5775136a6f362868293fd3d80d6f044164fbf57d1c73f70dd76",
      "rows": [
        {
          "name": "Operating Voltage Range",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDD Trip Point (MCP1XX-270)",
          "symbol": "VTRIP",
          "kind": "electrical",
          "unit": "V",
          "min": 2.591,
          "typ": 2.63,
          "max": 2.67,
          "conditions": "TA = +25°C (Note 1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VDD Trip Point (MCP1XX-270)",
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          "conditions": "Note 2",
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          "source": "datasheet"
        },
        {
          "name": "Threshold Hysteresis (MCP1XX-270)",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "V",
          "min": 0.026,
          "typ": null,
          "max": 0.158,
          "conditions": "TA = +25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Current, Reset Power-up Timer Inactive",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 1.75,
          "conditions": "Reset Power-up Timer (tRPU) Inactive",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Current, Reset Power-up Timer Active",
          "symbol": "IDD",
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          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Reset Power-up Timer (tRPU) Active",
          "source_page": 3,
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        },
        {
          "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",
          "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",
          "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": "Specified Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "ºC",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Except MCP1XX-195",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJ",
          "kind": "thermal",
          "unit": "ºC",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TA",
          "kind": "thermal",
          "unit": "ºC",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Absolute Maximum 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": "to (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,
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          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature with power applied",
          "symbol": "",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Maximum Junction temperature with power applied",
          "symbol": "",
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          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, 3L-SC70",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "ºC/W",
          "min": null,
          "typ": 335,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD Trip Point Tempco",
          "symbol": "TTPCO",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "printed ±100",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Open-drain Output Leakage Current",
          "symbol": "IOD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VDD Detect to RST Active",
          "symbol": "tRPD",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 130,
          "max": null,
          "conditions": "VDD ramped from VTRIP(MAX) + 250 mV down to VTRIP(MIN) – 250 mV, per Figure 1-1, CL = 50 pF (Note 1)",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "MCP121T-270E (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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