DK124

{
  "schema_version": 1,
  "type": "component",
  "slug": "dk124",
  "title": "DK124",
  "brief": "Shenzhen DongKe Semicon AC-DC Controllers and Regulators, DIP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "dk124"
  ],
  "component": {
    "mpn": "DK124",
    "manufacturer": "Shenzhen DongKe Semicon",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "AC-DC Controllers and Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d00f3cfccfc04a10996cb11dac286544.pdf",
    "parts": {
      "symbol": "dk124.kicad_sym",
      "footprint": "dk124.kicad_mod",
      "model_3d": "dk124-etched.glb",
      "model_3d_plain": "dk124.glb",
      "model_3d_step": "dk124-etched.step",
      "model_3d_step_plain": "dk124.step",
      "lbr": "dk124.lbr"
    },
    "distributor_links": {
      "lcsc": "C78752"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference. Tied together with pin 2 to form the IC ground return."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference. Tied together with pin 1 to form the IC ground return."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback control input. Sinks the optocoupler current (internal 40uA pull-up) to set the cycle-by-cycle peak current limit. FB=1.5V-2.5V linearly scales peak current; <1.33V triggers short-circuit/overload, >2.5V drops PWM to 22kHz, >2.8V enters burst standby."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Chip supply pin. Regulated by the internal patented self-supply circuit to ~5V (start 5.05V typ, restart 3.6V typ, OVP 6.55V typ). External VCC storage capacitor is charged from OC via the internal high-voltage current source. Absolute max 8V."
      },
      {
        "number": "5",
        "name": "OC",
        "type": "output",
        "description": "Drain of the internal 700V power MOSFET. Pins 5,6,7,8 are internally tied together for current-handling and thermal dissipation and connect to the transformer primary. Peak switch current limited to 1.3A typ; OC OVP trips at 600V typ."
      },
      {
        "number": "6",
        "name": "OC",
        "type": "output",
        "description": "Drain of the internal 700V power MOSFET (paralleled with pins 5,7,8)."
      },
      {
        "number": "7",
        "name": "OC",
        "type": "output",
        "description": "Drain of the internal 700V power MOSFET (paralleled with pins 5,6,8)."
      },
      {
        "number": "8",
        "name": "OC",
        "type": "output",
        "description": "Drain of the internal 700V power MOSFET (paralleled with pins 5,6,7)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/d00f3cfccfc04a10996cb11dac286544.pdf",
        "pages": 7,
        "sha256": "685d94645ea5e49a",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        0,
        0
      ],
      "corner": "bottom-right",
      "source": "fab-chamfer",
      "derived_from": "DIP-8_W7.62mm@sha256:222fb44370968119",
      "mark": "synthesised"
    },
    "models_3d": [
      {
        "file": "dk124.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "dk124-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": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "691775002dc5c06a34136f01c835983aeab58188c4fd233161d54a08a601d531",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shenzhen DongKe Semicon",
      "Package": "DIP-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "dk124"
  ],
  "discovery_pitch": "DK124 (Shenzhen DongKe Semicon) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "dk124.kicad_sym",
    "dk124.kicad_mod",
    "dk124.glb",
    "dk124.step",
    "dk124-etched.step",
    "dk124.lbr",
    "docs/hero.png",
    "docs/dk124-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T19:47:35.435Z"
}