817B

{
  "slug": "817b",
  "version": "0.1.0",
  "type": "component",
  "description": "UMW Transistor, Photovoltaic Output Optoisolators, DIP-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "path": "docs/hero.png"
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    "817b.lbr",
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    "viewers/footprint.html",
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  "component": {
    "mpn": "817B",
    "manufacturer": "UMW",
    "package": "DIP-4",
    "pin_count": 4,
    "category": "Optoisolators",
    "subcategory": "Transistor, Photovoltaic Output Optoisolators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906548433600512",
    "parts": {
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      "lbr": "817b.lbr"
    },
    "distributor_links": {
      "lcsc": "C695830",
      "mouser": "681-817B"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T14:23:30Z",
      "source": "Component Ocean /api/assign-pns",
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        "pn": null,
        "status": "no match"
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        "pn": "681-817B",
        "status": "found"
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    "pins": [
      {
        "number": "1",
        "name": "Anode",
        "type": "passive",
        "description": "LED anode of the input GaAs emitter; forward current IF max 50 mA, reverse voltage VR max 6 V."
      },
      {
        "number": "2",
        "name": "Cathode",
        "type": "passive",
        "description": "LED cathode of the input GaAs emitter; forward current IF max 50 mA, reverse voltage VR max 6 V."
      },
      {
        "number": "3",
        "name": "Emitter",
        "type": "passive",
        "description": "NPN phototransistor emitter; VECO max 6 V, collector current IC max 50 mA."
      },
      {
        "number": "4",
        "name": "Collector",
        "type": "passive",
        "description": "NPN phototransistor collector; VCEO max 35 V, collector current IC max 50 mA."
      }
    ],
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet covers DIP and SOP variants under the 817 series. The pin table is read from the DIP d",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
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        "cost_usd": 0.1793,
        "at": "2026-10-16T14:23:17"
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      "datasheet": {
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        "pages": 5,
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        "source_tier": "lcsc"
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      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "sha256": "39490b2c17b5f36ae3fdd5fdd2952f6879a060ff6cbc6d0241e3d6262fd0f215",
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}