main
Ray Set visibility: public 4c802bc 9h ago
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554
{
  "schema_version": 1,
  "type": "component",
  "slug": "sfh618a-4",
  "title": "SFH618A-4",
  "brief": "Vishay Intertech Optocouplers - Phototransistor Output, DIP-4. 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",
    "optocoupler-led-digital tube-photoelectric device",
    "sfh618a-4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SFH618A-4",
    "manufacturer": "Vishay Intertech",
    "package": "DIP-4",
    "pin_count": 4,
    "category": "Optocoupler/LED/Digital Tube/Photoelectric Device",
    "subcategory": "Optocouplers - Phototransistor Output",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/12ba7680683e80bf102f1d196e815993.pdf",
    "parts": {
      "symbol": "sfh618a-4.kicad_sym",
      "footprint": "sfh618a-4.kicad_mod",
      "model_3d": "sfh618a-4-hero.glb",
      "model_3d_plain": "sfh618a-4-etched.glb",
      "model_3d_step": "sfh618a-4-etched.step",
      "model_3d_step_plain": "sfh618a-4.step",
      "lbr": "sfh618a-4.lbr"
    },
    "distributor_links": {
      "lcsc": "C5224102"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:38:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 385 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A",
        "type": "passive",
        "description": "Anode of the GaAs infrared LED input, rated for a maximum forward current of 60 mA and reverse voltage of 6 V."
      },
      {
        "number": "2",
        "name": "C",
        "type": "passive",
        "description": "Cathode of the GaAs infrared LED input, the return side of the emitter diode (max forward current 60 mA)."
      },
      {
        "number": "3",
        "name": "E",
        "type": "passive",
        "description": "Emitter of the silicon phototransistor output, with a maximum emitter-collector voltage of 7 V."
      },
      {
        "number": "4",
        "name": "C",
        "type": "passive",
        "description": "Collector of the silicon phototransistor output, rated for VCEO of 55 V and a collector current of 50 mA (100 mA for tp ≤ 1 ms)."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin diagram on page 1 extracts as scrambled text (labels 'E A C C' and numbers '1 2 4 3'), so th; The datasheet has no pin table or pin function text, so the pin descriptions are built from the abso"
        ],
        "pages_sent": 10,
        "cost_usd": 0.1143,
        "at": "2026-10-22T23:38:10"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/12ba7680683e80bf102f1d196e815993.pdf",
        "pages": 10,
        "sha256": "41b157bf41f80f63",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sfh618a-4.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          4.93,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "39490b2c17b5f36ae3fdd5fdd2952f6879a060ff6cbc6d0241e3d6262fd0f215",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sfh618a-4-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          4.93,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "468c65a32c87e2455affb49d38bc05a188b9ebd1ca6f604254f5134ad8f82b31",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Vishay Intertech",
      "Package": "DIP-4",
      "Category": "Optocoupler/LED/Digital Tube/Photoelectric Device",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "41b157bf41f80f63eb7433048d4a1e6582176c19376d7b75197455c440028fd4",
      "rows": [
        {
          "name": "Reverse voltage (input)",
          "symbol": "VR",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "Tamb = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input power dissipation",
          "symbol": "Pdiss",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "Tamb = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward current",
          "symbol": "IF",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "Tamb = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector emitter voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 55,
          "conditions": "Tamb = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter collector voltage",
          "symbol": "VECO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "Tamb = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector current",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Tamb = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector current (pulse)",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "tp ≤ 1 ms",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output power dissipation",
          "symbol": "Pdiss",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Tamb = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature range",
          "symbol": "Tamb",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Soldering temperature",
          "symbol": "Tsld",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "max. 10 s, dip soldering distance to seating plane ≥ 1.5 mm",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.1,
          "max": 1.5,
          "conditions": "IF = 5 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reverse current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.01,
          "max": 10,
          "conditions": "VR = 6 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector emitter leakage current",
          "symbol": "ICEO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 10,
          "max": 200,
          "conditions": "VCE = 10 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector emitter saturation voltage",
          "symbol": "VCEsat",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.25,
          "max": 0.4,
          "conditions": "IC = 0.8 mA, IF = 1 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Current transfer ratio",
          "symbol": "CTR",
          "kind": "electrical",
          "unit": "%",
          "min": 160,
          "typ": null,
          "max": 320,
          "conditions": "IF = 1 mA, VCE = 0.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Current transfer ratio",
          "symbol": "CTR",
          "kind": "electrical",
          "unit": "%",
          "min": 80,
          "typ": 200,
          "max": null,
          "conditions": "IF = 0.5 mA, VCE = 1.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Tested withstanding isolation voltage",
          "symbol": "VISO",
          "kind": "electrical",
          "unit": "VRMS",
          "min": 5300,
          "typ": null,
          "max": null,
          "conditions": "According to UL1577, t = 1 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum rated withstanding isolation voltage",
          "symbol": "VISO",
          "kind": "electrical",
          "unit": "VRMS",
          "min": 4420,
          "typ": null,
          "max": null,
          "conditions": "According to UL1577, t = 1 min",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "CO",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "VR = 0 V, f = 1 MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector emitter capacitance",
          "symbol": "CCE",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "VCE = 5 V, f = 1 MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Coupling capacitance",
          "symbol": "CC",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 0.25,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, input",
          "symbol": "Rthja",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
          "typ": 1070,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, output",
          "symbol": "Rthja",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Turn on time",
          "symbol": "ton",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 6,
          "max": null,
          "conditions": "VCC = 5 V, IC = 2 mA, RL = 100 Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Rise time",
          "symbol": "tr",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 3.5,
          "max": null,
          "conditions": "VCC = 5 V, IC = 2 mA, RL = 100 Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Turn off time",
          "symbol": "toff",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 5.5,
          "max": null,
          "conditions": "VCC = 5 V, IC = 2 mA, RL = 100 Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Fall time",
          "symbol": "tf",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "VCC = 5 V, IC = 2 mA, RL = 100 Ω",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sfh618a-4"
  ],
  "discovery_pitch": "SFH618A-4 (Vishay Intertech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sfh618a-4.kicad_sym",
    "sfh618a-4.kicad_mod",
    "sfh618a-4.glb",
    "sfh618a-4.step",
    "sfh618a-4.lbr",
    "docs/hero.png",
    "docs/sfh618a-4-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sfh618a-4-hero.glb",
    "sfh618a-4-hero.overlay.json",
    "sfh618a-4-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}