main
Ray Set visibility: public 2e4587b 9d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "mst1661tq",
  "title": "MST1661TQ",
  "brief": "MST LED Drivers, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led drivers",
    "mst1661tq",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MST1661TQ",
    "manufacturer": "MST",
    "package": "TO-252",
    "pin_count": 3,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603360207611850752",
    "parts": {
      "symbol": "mst1661tq.kicad_sym",
      "footprint": "mst1661tq.kicad_mod",
      "model_3d": "mst1661tq-hero.glb",
      "model_3d_plain": "mst1661tq-etched.glb",
      "model_3d_step": "mst1661tq-etched.step",
      "model_3d_step_plain": "mst1661tq.step",
      "lbr": "mst1661tq.lbr"
    },
    "distributor_links": {
      "lcsc": "C22395106"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T03:15:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Battery positive terminal that supplies the device, with a DC supply range of 9 V to 24 V and a DC supply voltage absolute maximum of 40 V."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "output",
        "description": "Output terminal that switches the bulbs through the internal driver, with on-state resistance RDS(ON) of 60 mΩ typical and 80 mΩ maximum (Vdd=5V, Ic=1.6A), and drain current internally limited."
      },
      {
        "number": "3",
        "name": "CEXT",
        "type": "passive",
        "description": "Capacitor terminal for the external capacitor connected between CEXT and OUT that stores energy to power the device during the ON phase, with a CEXT capacitor voltage absolute maximum of 20 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives pin numbers, symbols and descriptions for the TO252 package, but does not state ; The pin configuration figure in the text extraction shows only the labels VIN, VOUT, CEXT with no ge; The Ordering Information lists the MST1661 in package TO252 only, so the TO-252 pinout applies to th"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0263,
        "at": "2026-10-18T03:13:35"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603360207611850752",
        "pages": 6,
        "sha256": "a4f89d63ee5a5c12",
        "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": "mst1661tq.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mst1661tq-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1cc951a4b14b3eeb1997150435a89378408ae2d51e5b2fdea74a361e3cb49531",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "MST",
      "Package": "TO-252",
      "Category": "LED Drivers",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a4f89d63ee5a5c124ec9c7093f6044b1801a309dc9e1664625ffb6654a45abae",
      "rows": [
        {
          "name": "DC Supply Voltage",
          "symbol": "Vin",
          "kind": "electrical",
          "unit": "V",
          "min": 9,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Under voltage Lockout Threshold",
          "symbol": "VddNORM",
          "kind": "electrical",
          "unit": "V",
          "min": 6.3,
          "typ": 6.5,
          "max": 6.7,
          "conditions": "VCEXT rising",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Under voltage Lockout Hysteresis",
          "symbol": "VddUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": 1.5,
          "max": 1.7,
          "conditions": "VCEXT falling",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "On State Resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 60,
          "max": 80,
          "conditions": "Vdd=5V;Ic =1.6A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillating Frequency",
          "symbol": "Focs",
          "kind": "electrical",
          "unit": "Hz",
          "min": 1.33,
          "typ": 1.42,
          "max": 1.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Drain Current Limit",
          "symbol": "Ilim",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "Rload<100mΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Overtemperature Shutdown",
          "symbol": "Tjsh",
          "kind": "electrical",
          "unit": "℃",
          "min": 125,
          "typ": null,
          "max": 140,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Overtemperature Reset",
          "symbol": "Tjrs",
          "kind": "electrical",
          "unit": "℃",
          "min": 100,
          "typ": null,
          "max": 115,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Turn-on Current Slope",
          "symbol": "dI/dt(on)",
          "kind": "electrical",
          "unit": "A/us",
          "min": null,
          "typ": 0.02,
          "max": null,
          "conditions": "Rload=8Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Turn-off Current Slope",
          "symbol": "dI/dt(off)",
          "kind": "electrical",
          "unit": "A/us",
          "min": null,
          "typ": 0.02,
          "max": null,
          "conditions": "Rload=8Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "MST1661 Double Frequency Flashing Threshold",
          "symbol": "IDF1",
          "kind": "electrical",
          "unit": "A",
          "min": 1.55,
          "typ": 1.71,
          "max": 1.87,
          "conditions": "Vin=9V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "MST1661 Double Frequency Flashing Threshold",
          "symbol": "IDF2",
          "kind": "electrical",
          "unit": "A",
          "min": 1.79,
          "typ": 1.98,
          "max": 2.18,
          "conditions": "Vin=12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "MST1661 Double Frequency Flashing Threshold",
          "symbol": "IDF3",
          "kind": "electrical",
          "unit": "A",
          "min": 1.97,
          "typ": 2.2,
          "max": 2.42,
          "conditions": "Vin=15V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Supply Voltage (absolute maximum)",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "CEXT Capacitor Voltage",
          "symbol": "Vdd",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Electrostatic Discharge (Human Body Mode)",
          "symbol": "Vesd",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "Human Body Mode",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Electrostatic Discharge (Machine Mode)",
          "symbol": "Vesd",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Machine Mode",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PL",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 55,
          "conditions": "Tc=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-top",
          "symbol": "Rthj-t",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 3.33,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-ambient",
          "symbol": "Rthj-amb",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mst1661tq"
  ],
  "discovery_pitch": "MST1661TQ (MST) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mst1661tq.kicad_sym",
    "mst1661tq.kicad_mod",
    "mst1661tq.glb",
    "mst1661tq.step",
    "mst1661tq.lbr",
    "docs/hero.png",
    "docs/mst1661tq-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mst1661tq-hero.glb",
    "mst1661tq-hero.overlay.json",
    "mst1661tq-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}