PRG21BC6R8MM1RA

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  "type": "component",
  "slug": "prg21bc6r8mm1ra",
  "title": "PRG21BC6R8MM1RA",
  "brief": "Murata Electronics Resettable Fuses, 0805. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "PRG21BC6R8MM1RA",
    "manufacturer": "Murata Electronics",
    "package": "0805",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Resettable Fuses",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590912163081109504",
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      "lbr": "prg21bc6r8mm1ra.lbr"
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    "distributor_links": {
      "lcsc": "C913685"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T22:22:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "One Sn-plated terminal electrode on the BaTiO3 semiconductive ceramic PTC body, rated for this 6.8 ohm MPN at a maximum voltage of DC30V and a maximum current of 5.5A."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "The opposite Sn-plated terminal electrode on the BaTiO3 semiconductive ceramic PTC body, which is non-polar and is used as the second connection of the posistor; the datasheet states the same 30V/5.5A limits for the part."
      }
    ],
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "pages": 7,
        "sha256": "3788dd6dd5891b67",
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      "pins": {
        "total": 2,
        "described": 2,
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        "refuses_to_fabricate": true
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "bd29ccc62530d3bcfbbe078f12aac2a99ac75d01c043a2723a4bd36540aac146",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "Murata Electronics",
      "Package": "0805",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "name": "Resistance tolerance",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "Printed ±20% for PRG21BC6R8MM1RA (tolerance code M in part number)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Max. Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Footnote *1 as printed: shall be passed repeatedly when the circuit runs abnormally",
          "source_page": 1,
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        },
        {
          "name": "Max. Current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "Footnote *2 as printed: passed continuously without tripping at 25°C, 60°C and 85°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Resistance at 25°C",
          "symbol": "R25",
          "kind": "electrical",
          "unit": "ohm",
          "min": null,
          "typ": 6.8,
          "max": null,
          "conditions": "At 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Hold Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "At +25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Hold Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "At +60°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Hold Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "At +85°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Trip Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 335,
          "max": null,
          "conditions": "At -20°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Trip Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 320,
          "max": null,
          "conditions": "At -10°C",
          "source_page": 1,
          "source": "datasheet"
        },
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          "name": "Trip Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 260,
          "max": null,
          "conditions": "At +25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal dissipation coefficient of mounting state (rating basis)",
          "symbol": "",
          "kind": "thermal",
          "unit": "mW/°C",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "Ratings are valid when the thermal dissipation coefficient of the mounting state is 10 mW/°C; other values may give different ratings",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "PRG21BC6R8MM1RA (Murata Electronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
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    "email": "[email protected]"
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