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{
  "schema_version": 1,
  "type": "component",
  "slug": "ncv303lsn45t1g",
  "title": "NCV303LSN45T1G",
  "brief": "onsemi Supervisor And Reset ICs, TSOP-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": [
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  "component": {
    "mpn": "NCV303LSN45T1G",
    "manufacturer": "onsemi",
    "package": "TSOP-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Supervisor And Reset ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588910895455997952",
    "parts": {
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      "footprint": "ncv303lsn45t1g.kicad_mod",
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      "model_3d_step_plain": "ncv303lsn45t1g.step",
      "lbr": "ncv303lsn45t1g.lbr"
    },
    "distributor_links": {
      "lcsc": "C233719",
      "digikey": "NCV303LSN45T1GOSTR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T14:37:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "NCV303LSN45T1GOSTR-ND",
        "status": "found"
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      "mouser": {
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        "status": "quota"
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    "pins": [
      {
        "number": "1",
        "name": "Reset Output",
        "type": "output",
        "description": "Active-low reset output of the NCP303 open-drain N-channel type, which can be pulled up to VP through RP; the maximum output voltage is 12 V and the maximum output current is 70 mA."
      },
      {
        "number": "2",
        "name": "Input",
        "type": "input",
        "description": "Monitored supply input (Vin) for the undervoltage detector, rated to a maximum of 12 V, with a specified operating voltage range of 0.8 V to 10 V."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the device."
      },
      {
        "number": "4",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No internal connection; the datasheet does not specify a function for this pin."
      },
      {
        "number": "5",
        "name": "CD",
        "type": "passive",
        "description": "Delay capacitor pin that sets the reset time delay tD via an external capacitor, with an internal pull-up of about 1.0 MΩ and a voltage range of −0.3 V to Vin + 0.3 V."
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        "guard_notes": [
          "extractor flagged: The pin-connection text on page 1 is scrambled: it lists 'N.C.' next to pin 3 and 'Ground' next to p; Pin 4 is not explicitly labeled as N.C. in any clean line of the extracted text; the assignment is i; The MPN NCV303LSN45T1G is the open-drain (NCP303) variant with active-low reset, per the ordering ta"
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        "at": "2026-10-17T14:35:53"
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        "pages": 27,
        "sha256": "625daa7711ef4912",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 5,
        "cites_pages": true,
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TSOP-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
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          "name": "Detector Threshold (Pin 2, Vin Decreasing), TA = 25°C",
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          "name": "Detector Threshold Hysteresis (Pin 2, Vin Increasing)",
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          "min": 0.135,
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          "name": "Supply Current (Pin 2), Vin = 4.34 V",
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          "name": "Supply Current (Pin 2), Vin = 6.5 V",
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          "name": "Minimum Operating Voltage (Pin 2), TA = 25°C",
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          "name": "Minimum Operating Voltage (Pin 2), TA = −40°C to 125°C",
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          "name": "Maximum Operating Voltage (Pin 2)",
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          "name": "Reset Output Current (Active Low 'L') Nch Sink Current, NCP302, NCP303",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.01,
          "typ": 0.05,
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          "conditions": "(VOUT = 0.05 V, Vin = 0.70 V)",
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        {
          "name": "Reset Output Current (Active Low 'L') Nch Sink Current, NCP302, NCP303",
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          "kind": "electrical",
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          "min": 1,
          "typ": 2,
          "max": null,
          "conditions": "(VOUT = 0.50 V, Vin = 1.5 V)",
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          "source": "datasheet"
        },
        {
          "name": "CD Delay Pin Threshold Voltage (Pin 5)",
          "symbol": "VTCD",
          "kind": "electrical",
          "unit": "V",
          "min": 2.25,
          "typ": 3.04,
          "max": 3.83,
          "conditions": "(Vin = 4.95 V)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Delay Capacitor Pin Sink Current (Pin 5)",
          "symbol": "ICD",
          "kind": "electrical",
          "unit": "A",
          "min": 2,
          "typ": 200,
          "max": null,
          "conditions": "(Vin = 0.7 V, VCD = 0.1 V)",
          "source_page": 6,
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        },
        {
          "name": "Delay Capacitor Pin Sink Current (Pin 5)",
          "symbol": "ICD",
          "kind": "electrical",
          "unit": "A",
          "min": 120,
          "typ": 1600,
          "max": null,
          "conditions": "(Vin = 1.5 V, VCD = 0.5 V)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Delay Pullup Resistance (Pin 5)",
          "symbol": "RD",
          "kind": "electrical",
          "unit": "M",
          "min": 0.5,
          "typ": 1,
          "max": 2,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Power Supply Voltage (Pin 2)",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (Pin 1), N-Channel Open Drain",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 12,
          "conditions": "N-Channel Open Drain (NCP303)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Delay Capacitor Pin Voltage (Pin 5)",
          "symbol": "VCD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Printed upper limit is Vin + 0.3 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current (Pin 1)",
          "symbol": "IOUT",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "All Voltage Options: 1.2 V to 4.9 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
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        {
          "name": "Storage Temperature Range",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
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          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Thermal Resistance Junction-to-Air",
          "symbol": "RJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Latchup Performance, Positive",
          "symbol": "ILATCHUP",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Positive (Note 3, JESD78)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Latchup Performance, Negative",
          "symbol": "ILATCHUP",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Negative (Note 3, JESD78)",
          "source_page": 2,
          "source": "datasheet"
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