main
Ray Set visibility: public f097211 15d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "fpm253wjr003tm",
  "title": "FPM253WJR003TM",
  "brief": "FOJAN Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "resistors",
    "fpm253wjr003tm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FPM253WJR003TM",
    "manufacturer": "FOJAN",
    "package": "2512",
    "pin_count": 2,
    "category": "Resistors",
    "subcategory": "Current Sense Resistors / Shunt Resistors",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c3359fca14918b99b0dc4539e91363e2.pdf",
    "parts": {
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      "lbr": "fpm253wjr003tm.lbr"
    },
    "distributor_links": {
      "lcsc": "C48533602"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T21:31:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First terminal of the 3 mΩ (R003) alloy current-sense resistor, rated 3 W at 70 °C and 38 A rated current (86 A max overload) for the 2512 type."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second terminal of the 3 mΩ (R003) alloy current-sense resistor, with Kelvin four-terminal sensing points on the underside of this electrode (A and V pads) at 5.6±0.25 mm by 2.0±0.25 mm spacing."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet shows no numbered pins. The FPM253WJR003TM is a two-terminal chip resistor, so pins 1 ; The part number decodes to 2512 case, 3 W, ±5 % (J), 3 mΩ (R003), 7-inch reel (T), metal (M). R003 f; The Kelvin sense points (V and A pads on the page 5 drawing) are measurement locations on the bottom",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.1804,
        "at": "2026-10-19T21:30:47"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c3359fca14918b99b0dc4539e91363e2.pdf",
        "pages": 11,
        "sha256": "20558dfb235c52df",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "fpm253wjr003tm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.3,
          3.2,
          0.6
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "76b2052a3c120193de7cdc0af99157b6f375e9a4af7721e3e3d012968c877f27",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "fpm253wjr003tm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3.2,
          0.6
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c1740b6771e449478c4fe94dafd588ee9f3dc40ebaf4e7bf3eb5a7f5f9af0cf5",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "FOJAN",
      "Package": "2512",
      "Category": "Resistors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "20558dfb235c52df6dd02ed31b1a7926e57af33d7e54877a4003182841d4bb9b",
      "rows": [
        {
          "name": "Resistance tolerance (J code = ±5%)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Part-number tolerance code J; Kelvin four-terminal measurement",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature coefficient of resistance (T.C.R.)",
          "symbol": "TCR",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "Measured at 25°C and +125°C, reference +25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance range, Type 2512",
          "symbol": "R",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 1,
          "typ": null,
          "max": 100,
          "conditions": "Type 2512 (not 2512-L)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Rated power",
          "symbol": "P70",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "Power rating at P70",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Rated current, Type 2512",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 38,
          "max": null,
          "conditions": "Type 2512",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Max overload current, Type 2512",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": 86,
          "max": null,
          "conditions": "Type 2512",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 170,
          "conditions": "Type 2512",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dielectric withstanding voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V DC",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "Listed in features",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "High temperature exposure (storage) ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "T=170°C, 1000 hrs; measured 24 h after test",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low temperature exposure (storage) ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "T=-55°C, 1000 hrs; measured 24 h after test",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Temperature cycling ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "1000 cycles (-55°C to 125°C); measured 24 h after test",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Short time overload ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "5 x rated power for 5 s",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Moisture resistance ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "24 hours per cycle, 10 cycles",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Biased humidity ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "10% rated power at 85°C, RH 85%, 1000 hrs; measured 24 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Load life ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "1000 h at +70°C, 1.5 h ON / 0.5 h OFF; measured 24 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance to soldering heat ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "T=260±5°C solder, 10±1 s dwell",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Mechanical shock ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "100 g's, 6 ms half sine pulse",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance to vibration ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "5 g's for 20 min, 10-2000 Hz, 12 cycles each axis",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Board flex ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "Min 2 mm deflection, 60 s",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal shock ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "-55°C/+155°C, 1000 cycles",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ESD ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Direct contact ±6 kV; air discharge +12/+16/+25 kV",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "FPM253WJR003TM (FOJAN) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}