BL59S10

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl59s10",
  "title": "BL59S10",
  "brief": "BL Shanghai Belling Pressure Sensors, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensor",
    "bl59s10"
  ],
  "component": {
    "mpn": "BL59S10",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Sensor",
    "subcategory": "Pressure Sensors",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fd2de9af0d0da08d2498962e0046aa2e.pdf",
    "parts": {
      "symbol": "bl59s10.kicad_sym",
      "footprint": "bl59s10.kicad_mod",
      "model_3d": "bl59s10-etched.glb",
      "model_3d_plain": "bl59s10.glb",
      "model_3d_step": "bl59s10-etched.step",
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      "lbr": "bl59s10.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "C1",
        "type": "passive",
        "description": "External capacitor connection for the voltage feedback amplifier. Together with C2 sets the amplifier gain used with the IR photodiode."
      },
      {
        "number": "2",
        "name": "C2",
        "type": "passive",
        "description": "External capacitor connection for the voltage feedback amplifier. Works with C1 to determine amplifier gain."
      },
      {
        "number": "3",
        "name": "DETECT",
        "type": "input",
        "description": "Detecting input. Connects to a photodiode to supply a signal to the internal comparator for smoke detection."
      },
      {
        "number": "4",
        "name": "STROBE",
        "type": "output",
        "description": "Strobe voltage output referenced to VDD. When output equals VDD-5V it enables other internal circuits."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply pin. Operating range 6V to 12V; average supply current ~12uA."
      },
      {
        "number": "6",
        "name": "IRED",
        "type": "output",
        "description": "Pulse drive output signal for an external NPN transistor driving the IR photodiode/emitter."
      },
      {
        "number": "7",
        "name": "I/O",
        "type": "bidirectional",
        "description": "Interconnect pin. Can tie together up to 40 detectors for auxiliary alarm, remote alarm, or auto-dialer functions. On-chip pull-down when used as input."
      },
      {
        "number": "8",
        "name": "BRASS",
        "type": "output",
        "description": "Push-pull driver output to drive external buzzer for alarm and to indicate various operation states. Paired with SILVER for differential piezo drive."
      },
      {
        "number": "9",
        "name": "SILVER",
        "type": "output",
        "description": "Push-pull driver output to drive external buzzer for alarm. Paired with BRASS to drive the piezoelectric buzzer in push-pull configuration."
      },
      {
        "number": "10",
        "name": "FEEDBACK",
        "type": "input",
        "description": "Feedback terminal. Feeds the SILVER signal back into the push-pull output driver circuit input for resonant buzzer drive."
      },
      {
        "number": "11",
        "name": "LED",
        "type": "output",
        "description": "Open-drain output that can drive an indicator LED directly to signal detector operation states."
      },
      {
        "number": "12",
        "name": "OSC",
        "type": "input",
        "description": "Oscillator input. Connects to external R and C which set the internal oscillator frequency (~9.5-11.5ms period with recommended R2=10M, C3=1500pF)."
      },
      {
        "number": "13",
        "name": "R1",
        "type": "passive",
        "description": "External R and C connecting terminal. Sets the IRED output pulse period (Tf = 0.6931 * R1 * C3, typical R1 = 100k)."
      },
      {
        "number": "14",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground reference pin (GND)."
      },
      {
        "number": "15",
        "name": "LOW-SUPPLY",
        "type": "input",
        "description": "Low-voltage detecting input. Connected to an external resistor divider between VDD and LED to set the low-supply alarm threshold (typical trip 6.5-7.8V at VIN=VDD/3)."
      },
      {
        "number": "16",
        "name": "TEST",
        "type": "input",
        "description": "Test terminal. Normally pulled low by an internal pull-down; driving it high causes the IC to enter a simulated-smoke condition. Floats back to VSS via the pull-down."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/fd2de9af0d0da08d2498962e0046aa2e.pdf",
        "pages": 12,
        "sha256": "f4ede66631074c00",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOP-16",
      "Category": "Sensor",
      "Pins": "16"
    }
  },
  "variants": [
    {
      "mpn": "BL59A10",
      "kind": "unknown"
    },
    {
      "mpn": "BL59S10",
      "kind": "packaging"
    }
  ],
  "sections": [
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  "discovery_triggers": [
    "bl59s10"
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  "discovery_pitch": "BL59S10 (BL Shanghai Belling) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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  "updated_at": "2026-09-24T17:51:00.921Z"
}