CJ7812B-TBN-ATG

{
  "slug": "cj7812b-tbn-atg",
  "version": "0.1.0",
  "type": "component",
  "description": "Changjing Linear Voltage Regulators (LDO), TO-220-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management",
    "cj7812b-tbn-atg",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cj7812b-tbn-atg.kicad_sym",
    "cj7812b-tbn-atg.kicad_mod",
    "cj7812b-tbn-atg.glb",
    "cj7812b-tbn-atg.step",
    "cj7812b-tbn-atg.lbr",
    "docs/hero.png",
    "docs/cj7812b-tbn-atg-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cj7812b-tbn-atg-hero.glb",
    "cj7812b-tbn-atg-hero.overlay.json",
    "cj7812b-tbn-atg-etched.glb"
  ],
  "component": {
    "mpn": "CJ7812B-TBN-ATG",
    "manufacturer": "Changjing",
    "package": "TO-220-3L",
    "pin_count": 3,
    "category": "Power Management",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a3ac5429cbccaeace7fe94b7695fb76e.pdf",
    "parts": {
      "symbol": "cj7812b-tbn-atg.kicad_sym",
      "footprint": "cj7812b-tbn-atg.kicad_mod",
      "model_3d": "cj7812b-tbn-atg-hero.glb",
      "model_3d_plain": "cj7812b-tbn-atg-etched.glb",
      "model_3d_step": "cj7812b-tbn-atg-etched.step",
      "model_3d_step_plain": "cj7812b-tbn-atg.step",
      "lbr": "cj7812b-tbn-atg.lbr"
    },
    "distributor_links": {
      "lcsc": "C20622081"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T21:41:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Input of the device; recommended input voltage for CJ7812B is up to 32V (absolute maximum 36V)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Regulator ground."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated output of the device, fixed 12V for CJ7812B with output current up to 1A."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 9,
        "cost_usd": 0.0502,
        "at": "2026-10-22T21:41:34"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a3ac5429cbccaeace7fe94b7695fb76e.pdf",
        "pages": 33,
        "sha256": "2bf7e0142c58a2c8",
        "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": "cj7812b-tbn-atg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "7cb065d935df5771f0ba6e48ddd180863a121af76483dad7f18e667a7b68204a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cj7812b-tbn-atg-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "82c30e95865a5165e37c94028230a7483c3711ab50f7b8b43ed65699197631e1",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}