main
Ray Set visibility: public b919c99 14d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "bcr421uw6-7",
  "title": "BCR421UW6-7",
  "brief": "Diodes Incorporated LED Drivers, SOT-26. 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",
    "display modules - led drivers - display drivers",
    "bcr421uw6-7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BCR421UW6-7",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-26",
    "pin_count": 6,
    "category": "Display Modules / LED Drivers / Display Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://www.diodes.com/assets/Datasheets/BCR421UW6-7.pdf",
    "parts": {
      "symbol": "bcr421uw6-7.kicad_sym",
      "footprint": "bcr421uw6-7.kicad_mod",
      "model_3d": "bcr421uw6-7-hero.glb",
      "model_3d_plain": "bcr421uw6-7-etched.glb",
      "model_3d_step": "bcr421uw6-7-etched.step",
      "model_3d_step_plain": "bcr421uw6-7.step",
      "lbr": "bcr421uw6-7.lbr"
    },
    "distributor_links": {
      "lcsc": "C194382",
      "digikey": "31-BCR421UW6-7TR-ND",
      "mouser": "621-BCR421UW6-7"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T12:09:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "31-BCR421UW6-7TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "621-BCR421UW6-7",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Enable for biasing the transistor; on the BCR421U it is rated 18V max, draws 1.2mA typ at VEN = 3.3V, and accepts PWM dimming up to 25kHz."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "passive",
        "description": "Regulated output current (LED current sink), rated 40V max and 500mA max, with a 1.4V minimum output voltage."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "passive",
        "description": "Regulated output current (LED current sink), rated 40V max and 500mA max, with a 1.4V minimum output voltage."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "5",
        "name": "OUT",
        "type": "passive",
        "description": "Regulated output current (LED current sink), rated 40V max and 500mA max, with a 1.4V minimum output voltage."
      },
      {
        "number": "6",
        "name": "REXT",
        "type": "passive",
        "description": "Optional external resistor for adjusting the output current from the 10mA preset up to 350mA."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbers were read from the top-view pin-out drawing on page 1, which has no printed numbers. I t",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 13,
        "cost_usd": 0.376,
        "at": "2026-10-23T12:09:09"
      },
      "datasheet": {
        "url": "https://www.diodes.com/assets/Datasheets/BCR421UW6-7.pdf",
        "pages": 13,
        "sha256": "1effe8208a803680",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "bcr421uw6-7.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": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bcr421uw6-7-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "12ff94412287a3e3ce386ef448b713d883a338231e8eed9b3f699abc9017c263",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-26",
      "Category": "Display Modules / LED Drivers / Display Drivers",
      "Pins": "6"
    },
    "appearance": {
      "contacts": {
        "quote": " Terminals: Finish - Matte Tin Plated Leads. Solderable per MIL￾STD-202, Method 208  Weight: 0.018 grams (Approximate)",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "1effe8208a80368008ede68d9f562798b1519fd43646a443d7533cf64ff15623"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "1effe8208a80368008ede68d9f562798b1519fd43646a443d7533cf64ff15623",
      "rows": [
        {
          "name": "Collector-Emitter Breakdown Voltage",
          "symbol": "BVCEO",
          "kind": "electrical",
          "unit": "V",
          "min": 40,
          "typ": null,
          "max": null,
          "conditions": "IC = 1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 200,
          "typ": 350,
          "max": 500,
          "conditions": "IC = 50mA; VCE = 1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Internal Resistor",
          "symbol": "RINT",
          "kind": "electrical",
          "unit": "Ω",
          "min": 85,
          "typ": null,
          "max": 105,
          "conditions": "IRINT = 10mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current (BCR421U)",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": 9,
          "typ": 10,
          "max": 11,
          "conditions": "VOUT = 1.4V; VEN = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage Drop (VREXT)",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "V",
          "min": 0.85,
          "typ": 0.95,
          "max": 1.05,
          "conditions": "IOUT = 10mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Enable Voltage (BCR421U)",
          "symbol": "VEN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 18,
          "conditions": "relative to GND, TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "IOUT",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
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          "max": 500,
          "conditions": "TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reverse Voltage Between all Terminals",
          "symbol": "VR",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation (Note 5)",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 1190,
          "conditions": "OUT leads on 50mm x 50mm 1oz copper, TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation (Note 6)",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 912,
          "conditions": "OUT leads on 25mm x 25mm 1oz copper, TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Ambient (Note 5)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 105,
          "max": null,
          "conditions": "50mm x 50mm 1oz copper",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Ambient (Note 6)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 137,
          "max": null,
          "conditions": "25mm x 25mm 1oz copper",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Lead",
          "symbol": "RθJL",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "Note 7",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Recommended Operating Junction Temperature Range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Operating Junction and Storage Temperature Range",
          "symbol": "TJ, TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Model (BCR421U)",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "JEDEC Class 1C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Machine Model (BCR421U)",
          "symbol": "MM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "JEDEC Class C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Enable Current (BCR421U)",
          "symbol": "IEN",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.2,
          "max": null,
          "conditions": "VEN = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bias Resistor (BCR421U)",
          "symbol": "RB",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current at REXT = 5.1Ω (BCR421U)",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VOUT > 2.0V; VEN = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Output Voltage",
          "symbol": "VOUT(MIN)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.4,
          "max": null,
          "conditions": "IOUT > 18mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current Change vs. Temperature (BCR421U)",
          "symbol": "ΔIOUT/IOUT",
          "kind": "temperature_coefficient",
          "unit": "%/°C",
          "min": null,
          "typ": -0.2,
          "max": null,
          "conditions": "VOUT > 2.0V; VEN = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current Change vs. Supply Voltage (BCR421U)",
          "symbol": "ΔIOUT/IOUT",
          "kind": "voltage_coefficient",
          "unit": "%/V",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VOUT > 2.0V; VEN = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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  ],
  "discovery_triggers": [
    "bcr421uw6-7"
  ],
  "discovery_pitch": "BCR421UW6-7 (Diodes Incorporated) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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    "path": "docs/hero.png"
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  "visibility": {
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}