{
  "title": "12 V DC power entry (PWR-DC12)",
  "informal_names": [
    "DC power entry",
    "DC barrel power",
    "12 V DC entry"
  ],
  "notes": "Nominal 12 V DC from an external adapter enters a product at a DC entry and feeds a DC rail, which the module or the case distribution regulates locally. Separate from the ±12 V bus. A dual-source module is connected to one source at a time.",
  "nominal_v": 12,
  "typical_input_range_v": {
    "min": 11.4,
    "max": 12.6,
    "note": "Typical 12 V brick regulation; products may publish a wider safe range."
  },
  "polarity": "center_positive",
  "variants": [
    {
      "id": "DC-BAR21",
      "inner_diameter_mm": 2.1,
      "outer_diameter_mm": 5.5,
      "typical_continuous_a": 2.5,
      "clause": "6.7",
      "notes": "Also a PWR-DC12 outlet to a module (DC-009)."
    },
    {
      "id": "DC-BAR25",
      "inner_diameter_mm": 2.5,
      "outer_diameter_mm": 5.5,
      "typical_continuous_a": 5,
      "clause": "6.7",
      "notes": "Higher current, from an adapter; never an output to a module (DC-009). A DC-BAR25 plug enters a DC-BAR21 DC entry but makes unreliable contact (ASM-004)."
    }
  ],
  "terminal_map": {
    "tip": "P12_IN",
    "sleeve": "PGND"
  },
  "entry_inlets": [
    {
      "id": "DC-VH2",
      "family": "jst_vh_2pin",
      "rated_continuous_a": 10,
      "rating_basis": "1 contact per pole × 10 A (JST VH)",
      "panel_receptacle": {
        "mpn": "B2P-VH or B2PS-VH",
        "manufacturer": "JST"
      },
      "mate_plug": {
        "mpn": "VHR-2N",
        "manufacturer": "JST"
      },
      "source": "JST-VH",
      "pins": [
        {
          "pin": 1,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 2,
          "function": "−V",
          "net": "PGND"
        }
      ]
    },
    {
      "id": "DC-DIN4",
      "family": "locking_4pin_dc_power_din",
      "rated_continuous_a": 15,
      "rating_basis": "2 contacts per pole × 7.5 A (Kycon KPJX-4S-S)",
      "panel_receptacle": {
        "mpn": "KPJX-4S-S",
        "manufacturer": "Kycon"
      },
      "mate_plug": {
        "mpn": "KPPX-4P",
        "manufacturer": "Kycon"
      },
      "source": "KYCON-KPPX",
      "pins": [
        {
          "pin": 1,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 2,
          "function": "−V",
          "net": "PGND"
        },
        {
          "pin": 3,
          "function": "−V",
          "net": "PGND"
        },
        {
          "pin": 4,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 5,
          "function": "shell",
          "net": "PANEL",
          "optional": true
        }
      ]
    },
    {
      "id": "DC-MF6",
      "family": "molex_minifit_jr",
      "circuits": 6,
      "pitch_mm": 4.2,
      "layout": "2x3",
      "rated_continuous_a": 24,
      "rating_basis": "3 circuits per pole × 8 A at 18 AWG (Molex PS-5556-001, 4 to 6 circuits)",
      "panel_receptacle": {
        "mpn": "39-30-1060",
        "manufacturer": "Molex"
      },
      "mate_plug": {
        "mpn": "39-01-2060",
        "manufacturer": "Molex",
        "notes": "Mating cable plug"
      },
      "source": "MOLEX-MFJ",
      "pins": [
        {
          "pin": 1,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 2,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 3,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 4,
          "function": "−V",
          "net": "PGND"
        },
        {
          "pin": 5,
          "function": "−V",
          "net": "PGND"
        },
        {
          "pin": 6,
          "function": "−V",
          "net": "PGND"
        }
      ]
    },
    {
      "id": "DC-MF8",
      "family": "molex_minifit_jr",
      "circuits": 8,
      "pitch_mm": 4.2,
      "layout": "2x4",
      "rated_continuous_a": 28,
      "rating_basis": "4 circuits per pole × 7 A at 18 AWG (Molex PS-5556-001, 7 to 10 circuits)",
      "panel_receptacle": {
        "mpn": "39-30-1080",
        "manufacturer": "Molex"
      },
      "mate_plug": {
        "mpn": "39-01-2080",
        "manufacturer": "Molex",
        "notes": "Mating cable plug"
      },
      "source": "MOLEX-MFJ",
      "pins": [
        {
          "pin": 1,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 2,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 3,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 4,
          "function": "+V",
          "net": "P12_IN"
        },
        {
          "pin": 5,
          "function": "−V",
          "net": "PGND"
        },
        {
          "pin": 6,
          "function": "−V",
          "net": "PGND"
        },
        {
          "pin": 7,
          "function": "−V",
          "net": "PGND"
        },
        {
          "pin": 8,
          "function": "−V",
          "net": "PGND"
        }
      ]
    }
  ],
  "distribution_outputs": {
    "allowed": [
      "DC-BAR21",
      "DC-VH2"
    ],
    "note": "A DC distribution product feeds modules through DC-BAR21 jacks or DC-VH2 headers; DC-BAR25 is not used on a distribution output (EIS-DC-009)."
  }
}