main
Ray Set visibility: public 608cbdd 7d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "bct2561euk28-tr",
  "title": "BCT2561EUK28-TR",
  "brief": "BROADCHIP Linear Voltage Regulators (LDO), SOT-23-5. 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",
    "power supply chip",
    "bct2561euk28-tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BCT2561EUK28-TR",
    "manufacturer": "BROADCHIP",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588945503153770496",
    "parts": {
      "symbol": "bct2561euk28-tr.kicad_sym",
      "footprint": "bct2561euk28-tr.kicad_mod",
      "model_3d": "bct2561euk28-tr-hero.glb",
      "model_3d_plain": "bct2561euk28-tr-etched.glb",
      "model_3d_step": "bct2561euk28-tr-etched.step",
      "model_3d_step_plain": "bct2561euk28-tr.step",
      "lbr": "bct2561euk28-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2887815"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T00:51:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Input of supply voltage, operating over 1.6V to 5.5V; place the 1µF or larger input capacitor close to this pin and GND."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; the input and output capacitors should be placed close to this pin and their respective VIN and VOUT pins."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable control input, active high, with thresholds of VIH 1.5V and VIL 0.4V; a logic low shuts the device down to a typical 10nA shutdown current."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "5",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulator output, fixed at 2.8V for this part number, with a maximum output current of 300mA."
      }
    ],
    "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 EN threshold table lists VIH 1.5V and VIL 0.4V without an explicit MIN/MAX column assignment in ; BCT2561EUK28-TR is listed in the ordering table as SOT23-5, 2.8V output, 3000 pcs/reel. Pinout is ta"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0468,
        "at": "2026-10-19T00:49:28"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588945503153770496",
        "pages": 13,
        "sha256": "eb030ed459c93c78",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bct2561euk28-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bct2561euk28-tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ddab7fec341414df8fcff291cffbc22e1a62167fc14c9ad115abf54156af8ea3",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BROADCHIP",
      "Package": "SOT-23-5",
      "Category": "Power Supply Chip",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "eb030ed459c93c78e7206fc3e0402abf2a9703cebc515b0386a4c2d85b7cffdb",
      "rows": [
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Accuracy (1)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "IOUT=0.1mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "mA",
          "min": 350,
          "typ": null,
          "max": 550,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VIN to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN, OUT to GND",
          "symbol": "EN, OUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "ESD Susceptibility MM",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "MM",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN Input Threshold High",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "EN Input Threshold Low",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Maximum Output Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Ground Pin Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "No load, EN = VIN",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage (VOUT = 2.8V)",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 180,
          "conditions": "IOUT=300mA; VOUT = 2.8V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVLNR",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "VIN=1.6V or (VOUT+0.5V) to 5.5V, IOUT=30mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVLDR",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "IOUT=10mA to 300mA, COUT=1uF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Noise",
          "symbol": "en",
          "kind": "electrical",
          "unit": "uVRMS",
          "min": null,
          "typ": 48,
          "max": null,
          "conditions": "f=10Hz to 100kHz, COUT=1uF, IOUT=100mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "ILOAD=50mA, COUT=1uF, VIN=2.2V, VOUT=1.2V, f=1KHz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "EN Input Bias Current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.01,
          "max": 1,
          "conditions": "VIN=5.0V, EN=5.0V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Supply Current",
          "symbol": "IQ(SHDN)",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.01,
          "max": 1,
          "conditions": "EN=0V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Temperature",
          "symbol": "TSHDN",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Hysteresis",
          "symbol": "ΔTSHDN",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bct2561euk28-tr"
  ],
  "discovery_pitch": "BCT2561EUK28-TR (BROADCHIP) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "visibility": {
    "public": true
  }
}