BD41044FJ-CE2

{
  "schema_version": 1,
  "type": "component",
  "slug": "bd41044fj-ce2",
  "title": "BD41044FJ-CE2",
  "brief": "ROHM CAN Controllers, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "bd41044fj-ce2"
  ],
  "component": {
    "mpn": "BD41044FJ-CE2",
    "manufacturer": "ROHM",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "CAN Controllers",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201121800_ROHM-Semicon-BD41044FJ-CE2_C2937651.pdf",
    "parts": {
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      "footprint": "bd41044fj-ce2.kicad_mod",
      "model_3d": "bd41044fj-ce2-etched.glb",
      "model_3d_plain": "bd41044fj-ce2.glb",
      "model_3d_step": "bd41044fj-ce2-etched.step",
      "model_3d_step_plain": "bd41044fj-ce2.step",
      "lbr": "bd41044fj-ce2.lbr"
    },
    "distributor_links": {
      "digikey": "846-BD41044FJ-CE2TR-ND",
      "lcsc": "C2937651"
    },
    "pins": [
      {
        "number": "1",
        "name": "TXD",
        "type": "input",
        "description": "Transmission data input from the host microcontroller. Internal pull-up resistor to VCC. LOW drives the CAN bus dominant; HIGH allows the bus recessive. Logic thresholds: VIH >= 0.7*VCC, VIL <= 0.3*VCC. Protected by TXD dominant time-out (0.8 - 10 ms) in Normal mode."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V) for the device."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "Main supply voltage input. Recommended operating range 4.75 V to 5.25 V (typ 5.0 V). Absolute maximum -0.3 V to +7.0 V. Typical operating current: 10 uA (Standby), 5 mA (Normal Recessive), 45 mA (Normal Dominant, 60 ohm load)."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "Receive data output to the host microcontroller. Push-pull CMOS driver: IOH = -1 to -8 mA at VCC-0.4 V, IOL = 1 to 12 mA at 0.4 V. In Normal mode: HIGH = bus recessive, LOW = bus dominant. In Standby mode: HIGH when no wake-up detected, LOW when wake-up request detected. A diode to VCC prevents reverse current in Power-OFF mode."
      },
      {
        "number": "5",
        "name": "SPLIT",
        "type": "output",
        "description": "Common-mode stabilization output for the CAN bus split-termination network. Outputs VCC/2 in Normal mode (0.45*VCC to 0.55*VCC at RLOAD=1 MOhm); Hi-Z in Standby and Power-OFF modes. Recommended external capacitor 1.0 - 100 nF (typ 4.7 nF). Absolute maximum -27 V to +40 V."
      },
      {
        "number": "6",
        "name": "CANL",
        "type": "bidirectional",
        "description": "LOW-level CAN bus line. Differential transceiver I/O driven low during dominant state (typ 1.5 V, VDOM_DIFF 1.5 - 3.0 V into 60 ohm) and biased to VCC/2 during recessive. Absolute maximum -27 V to +40 V; common-mode range -12 V to +12 V; input impedance ~15 kOhm."
      },
      {
        "number": "7",
        "name": "CANH",
        "type": "bidirectional",
        "description": "HIGH-level CAN bus line. Differential transceiver I/O driven high during dominant state (typ 3.5 V) and biased to VCC/2 during recessive. Absolute maximum -27 V to +40 V; common-mode range -12 V to +12 V; input impedance ~15 kOhm."
      },
      {
        "number": "8",
        "name": "STB",
        "type": "input",
        "description": "Mode control input with internal pull-up resistor. HIGH selects Standby mode (low-power, wake-up detection only); LOW selects Normal mode (full CAN transceiver operation). Logic thresholds: VIH >= 0.7*VCC, VIL <= 0.3*VCC. Absolute maximum -0.3 V to +7.0 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201121800_ROHM-Semicon-BD41044FJ-CE2_C2937651.pdf",
        "pages": 25,
        "sha256": "9e11f04fab71ed08",
        "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": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
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        "file": "bd41044fj-ce2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bd41044fj-ce2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ad64776958f29e7c986fae0ef5af2edd6558f61aa848fcb1d91d2e84f8827c50",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ROHM",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
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    "readme",
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    "info"
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  "discovery_triggers": [
    "bd41044fj-ce2"
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  "discovery_pitch": "BD41044FJ-CE2 (ROHM) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "bd41044fj-ce2.kicad_mod",
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    "bd41044fj-ce2.step",
    "bd41044fj-ce2-etched.step",
    "bd41044fj-ce2.lbr",
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    "docs/bd41044fj-ce2-datasheet.pdf",
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:41:39.063Z"
}