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Ray Set visibility: public fdaac7c 2d ago
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{
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  "slug": "fodm124r2",
  "title": "FODM124R2",
  "brief": "onsemi Transistor, Photovoltaic Output Optoisolators, SOP-4-2.54mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "manufacturer": "onsemi",
    "package": "SOP-4-2.54mm",
    "pin_count": 4,
    "category": "Optoisolators",
    "subcategory": "Transistor, Photovoltaic Output Optoisolators",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/fodm124r2-d.pdf",
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      "lbr": "fodm124r2.lbr"
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    "distributor_links": {
      "lcsc": "C232855",
      "digikey": "FODM124R2TR-ND",
      "mouser": "512-FODM124R2"
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    "distributor_check": {
      "checked_at": "2026-10-26T08:16:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "FODM124R2TR-ND",
        "status": "found"
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      "mouser": {
        "pn": "512-FODM124R2",
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    "pins": [
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        "number": "1",
        "name": "ANODE",
        "type": "input",
        "description": "Infrared emitting diode anode; continuous forward current IF(avg) is limited to 50 mA and reverse voltage VR to 6 V (page 4)."
      },
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        "number": "2",
        "name": "CATHODE",
        "type": "passive",
        "description": "Infrared emitting diode cathode, which is the return for the 50 mA continuous forward current limit with 6 V maximum reverse voltage (page 4)."
      },
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        "number": "3",
        "name": "EMITTER",
        "type": "passive",
        "description": "Phototransistor emitter; the emitter-collector breakdown voltage VECO is rated at 6 V maximum (page 4)."
      },
      {
        "number": "4",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Phototransistor collector; continuous collector current IC is limited to 80 mA and VCEO to 80 V for FODM124 (page 4)."
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        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
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          "extractor flagged: The datasheet covers the 4-pin Full Pitch Mini-Flat package with a 2.54 mm lead pitch, not an SOP-4-; The pin-to-function mapping (1 ANODE, 2 CATHODE, 3 EMITTER, 4 COLLECTOR) is inferred from the extrac; The ordering table lists FODM121R2 as tape and reel (2500 units) and states that it also applies to "
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        "pages_sent": 13,
        "cost_usd": 0.0172,
        "at": "2026-10-26T08:16:14"
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        "described": 4,
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      "Manufacturer": "onsemi",
      "Package": "SOP-4-2.54mm",
      "Category": "Optoisolators",
      "Pins": "4"
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          "name": "Lead Solder Temperature",
          "symbol": "TSOL",
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          "min": null,
          "typ": null,
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          "conditions": "for 10 sec",
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        {
          "name": "Continuous Forward Current (emitter)",
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          "kind": "absolute_maximum",
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        {
          "name": "Peak Forward Current (emitter)",
          "symbol": "IF (pk)",
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          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "1 µs pulse, 300 pps.",
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        {
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          "kind": "absolute_maximum",
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          "name": "Emitter Power Dissipation",
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          "min": null,
          "typ": null,
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          "conditions": "Derate linearly 1.41 mW/°C above 75°C",
          "source_page": 4,
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          "conditions": "FODM121 Series, FODM124",
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        {
          "name": "Detector Power Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Derate linearly 3.27 mW/°C above 80°C",
          "source_page": 4,
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        {
          "name": "Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
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          "min": null,
          "typ": 1,
          "max": 1.3,
          "conditions": "FODM121 Series, FODM124, IF = 10 mA",
          "source_page": 5,
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        {
          "name": "Reverse Current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "FODM121 Series, FODM124, FODM2701, VR = 5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Breakdown Voltage FODM124",
          "symbol": "BVCEO",
          "kind": "electrical",
          "unit": "V",
          "min": 80,
          "typ": null,
          "max": null,
          "conditions": "FODM121 Series, FODM124, IC = 1 mA, IF = 0",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Emitter-Collector Breakdown Voltage",
          "symbol": "BVECO",
          "kind": "electrical",
          "unit": "V",
          "min": 7,
          "typ": null,
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          "conditions": "All, IE = 100 µA, IF = 0",
          "source_page": 5,
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        {
          "name": "Collector Dark Current",
          "symbol": "ICEO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
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          "conditions": "All, VCE = 40 V, IF = 0",
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          "name": "Capacitance",
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          "kind": "electrical",
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          "conditions": "All, VCE = 0 V, f = 1 MHz",
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          "name": "DC Current Transfer Ratio FODM124 (IF=1 mA)",
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          "kind": "electrical",
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          "typ": null,
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          "conditions": "FODM124, IF = 1 mA, VCE = 0.5 V",
          "source_page": 5,
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        {
          "name": "DC Current Transfer Ratio FODM124 (IF=0.5 mA)",
          "symbol": "CTR",
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          "unit": "%",
          "min": 50,
          "typ": null,
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          "conditions": "FODM124, IF = 0.5 mA, VCE = 1.5 V",
          "source_page": 5,
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          "name": "Saturation Voltage FODM124",
          "symbol": "VCE(SAT)",
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          "max": 0.4,
          "conditions": "FODM124, IF = 1 mA, IC = 0.5 mA",
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          "name": "Rise Time (Non-Saturated)",
          "symbol": "tr",
          "kind": "timing",
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          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "All, IC = 2 mA, VCE = 5 V, RL = 100 Ω",
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          "source_page": 5,
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          "name": "Steady State Isolation Voltage",
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          "kind": "electrical",
          "unit": "VACRMS",
          "min": 3750,
          "typ": null,
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          "source_page": 5,
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          "name": "Maximum Working Insulation Voltage",
          "symbol": "VIORM",
          "kind": "absolute_maximum",
          "unit": "Vpeak",
          "min": null,
          "typ": null,
          "max": 565,
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          "source_page": 3,
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        {
          "name": "Highest Allowable Over-Voltage",
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          "kind": "absolute_maximum",
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          "typ": null,
          "max": 6000,
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          "source_page": 3,
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          "name": "Case Temperature (safety limit)",
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          "name": "Input Current (safety limit)",
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          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
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          "max": 200,
          "conditions": "Safety limit value",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Output Power (safety limit)",
          "symbol": "PS,OUTPUT",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
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          "conditions": "Safety limit value",
          "source_page": 3,
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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