main
Ray Set visibility: public ff22f19 22d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "tisp4500h3bjr-s",
  "title": "TISP4500H3BJR-S",
  "brief": "BOURNS Semiconductor Discharge Tubes (TSS), SMB(DO-214AA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "TISP4500H3BJR-S",
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    "package": "SMB(DO-214AA)",
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    "category": "Circuit Protection",
    "subcategory": "Semiconductor Discharge Tubes (TSS)",
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    "distributor_links": {
      "lcsc": "C3225273",
      "digikey": "TISP4500H3BJR-STR-ND",
      "mouser": "652-TISP4500H3BJR-S"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T11:09:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "TISP4500H3BJR-STR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "652-TISP4500H3BJR-S",
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    "pins": [
      {
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        "name": "R",
        "type": "passive",
        "description": "R terminal of the symmetrical bidirectional thyristor overvoltage protector, with repetitive peak off-state voltage of ±350 V and breakover voltage of ±500 V, and all datasheet measurements are referenced to this terminal."
      },
      {
        "number": "2",
        "name": "T",
        "type": "passive",
        "description": "T terminal of the symmetrical bidirectional thyristor overvoltage protector, which limits overvoltages on the line to ±500 V over the temperature range with a minimum off-state voltage of ±350 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The SMBJ top-view diagram text reads 'R T' over '1 2', which pairs R with pin 1 and T with pin 2 by ; The datasheet gives only two terminals for the SMB package; the pin types are assigned as passive be"
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        "pages_sent": 5,
        "cost_usd": 0.0432,
        "at": "2026-10-16T11:08:50"
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        "pages": 5,
        "sha256": "481f93eb7d15d5ed",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "029466277d91e9f5492556be93e46611049e07115c7913880c547afa96058ed4",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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  "metadata": {
    "specs": {
      "Manufacturer": "BOURNS",
      "Package": "SMB(DO-214AA)",
      "Category": "Circuit Protection",
      "Pins": "2"
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    "characteristics": {
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      "datasheet_sha256": "481f93eb7d15d5eda26dd5abee0f04047449c9978287d4ef72b831f2c87a08c6",
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          "symbol": "IDRM",
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          "unit": "μA",
          "min": -5,
          "typ": null,
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          "conditions": "VD = VDRM, TA = 25 °C",
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          "min": -500,
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          "max": 500,
          "conditions": "dv/dt = ±250 V/ms, RSOURCE= 300 Ω",
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        {
          "name": "Impulse breakover voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": -500,
          "typ": null,
          "max": 500,
          "conditions": "ITU-T recommendation K.44 (02/2000), Figure A.3-1/K.44 10/700 impulse generator, Charge Voltage = ±4 kV",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Breakover current",
          "symbol": "I(BO)",
          "kind": "electrical",
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          "min": -0.6,
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          "min": -0.15,
          "typ": null,
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          "conditions": "IT = ±5 A, di/dt = -/+30 mA/ms",
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        {
          "name": "Off-state current",
          "symbol": "ID",
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          "conditions": "VD = ±50 V, TA = 70 °C",
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          "name": "Non-repetitive peak on-state pulse current, 2/10 μs voltage wave shape (GR-1089-CORE)",
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          "name": "Non-repetitive peak on-state pulse current, 10/250 μs voltage wave shape (GR-1089-CORE)",
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        {
          "name": "Non-repetitive peak on-state pulse current, 10/700 (ITU-T K.20/21/45, 5/310 s current wave shape)",
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          "name": "Non-repetitive peak on-state current, 50 Hz, 20 ms (1 cycle)",
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          "conditions": "50 Hz, 20 ms (1 cycle)",
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          "name": "Non-repetitive peak on-state current, 50 Hz, 1000 s",
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          "name": "Junction temperature",
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          "unit": "°C",
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          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Storage temperature range",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction to free air thermal resistance, EIA/JESD51-3 PCB",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 113,
          "max": null,
          "conditions": "EIA/JESD51-3 PCB, IT = ITSM(1000), TA = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction to free air thermal resistance, 265 mm x 210 mm populated line card, 4-layer PCB",
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          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "265 mm x 210 mm populated line card, 4-layer PCB, IT = ITSM(1000), TA = 25 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature range (controlled environment)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
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  "discovery_triggers": [
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  "discovery_pitch": "TISP4500H3BJR-S (BOURNS) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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