ECS-320-8-37B2-CKM-TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ecs-320-8-37b2-ckm-tr",
  "title": "ECS-320-8-37B2-CKM-TR",
  "brief": "ECS Crystals, SMD2016-4P. 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",
    "crystals, oscillators, resonators",
    "ecs-320-8-37b2-ckm-tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ECS-320-8-37B2-CKM-TR",
    "manufacturer": "ECS",
    "package": "SMD2016-4P",
    "pin_count": 4,
    "category": "Crystals, Oscillators, Resonators",
    "subcategory": "Crystals",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600492810407854080",
    "parts": {
      "symbol": "ecs-320-8-37b2-ckm-tr.kicad_sym",
      "footprint": "ecs-320-8-37b2-ckm-tr.kicad_mod",
      "model_3d": "ecs-320-8-37b2-ckm-tr-hero.glb",
      "model_3d_plain": "ecs-320-8-37b2-ckm-tr-etched.glb",
      "model_3d_step": "ecs-320-8-37b2-ckm-tr-etched.step",
      "model_3d_step_plain": "ecs-320-8-37b2-ckm-tr.step",
      "lbr": "ecs-320-8-37b2-ckm-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C6547979",
      "digikey": "50-ECS-320-8-37B2-CKM-TR-ND",
      "mouser": "520-320-8-37B2-CKMTR"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T15:50:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "50-ECS-320-8-37B2-CKM-TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "520-320-8-37B2-CKMTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "In/Out",
        "type": "passive",
        "description": "Crystal terminal (In/Out); the crystal is symmetrical and pads 1 and 3 are interchangeable, so either orientation is electrically valid."
      },
      {
        "number": "2",
        "name": "Gnd",
        "type": "power_in",
        "description": "Ground pad connected to Gnd per the datasheet pad connection table; no additional electrical limits are stated."
      },
      {
        "number": "3",
        "name": "Out/In",
        "type": "passive",
        "description": "Crystal terminal (Out/In); the crystal is symmetrical and pads 1 and 3 are interchangeable, so either orientation is electrically valid."
      },
      {
        "number": "4",
        "name": "Gnd",
        "type": "power_in",
        "description": "Ground pad connected to Gnd per the datasheet pad connection table; no additional electrical limits are stated."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet covers the ECX-1637B2 family (2.0 x 1.6 x 0.45 mm). The MPN's -37B2 code maps to this ; The datasheet labels pads 1 and 3 as 'In/Out' and 'Out/In' and states they are interchangeable. Pad ; The datasheet gives no pin-level electrical limits, so pin descriptions contain only what the pad co"
        ],
        "pages_sent": 2,
        "cost_usd": 0.015,
        "at": "2026-10-15T15:49:59"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600492810407854080",
        "pages": 2,
        "sha256": "295c7caddb585618",
        "source_tier": "lcsc"
      },
      "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": [
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        "file": "ecs-320-8-37b2-ckm-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2,
          1.6,
          0.93
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "eea7262e5781943394ac3ed4f9d076ea60a9856fdf5911f6ab502d1fcc1b0836",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ecs-320-8-37b2-ckm-tr-etched.step",
        "role": "eda",
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        "units": "mm",
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        "seat": "z = 0",
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        "sha256": "63a48dfc238edfd8ac6b74648f58bbdba9e81dc0573d38cabd6f9b25ff72a74a",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ECS",
      "Package": "SMD2016-4P",
      "Category": "Crystals, Oscillators, Resonators",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "295c7caddb585618b7fedb04b658564d3694aec006b0ad2b7c3de5ebc42a2a34",
      "rows": [
        {
          "name": "Frequency Tolerance (C option, decoded from P/N)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "@ +25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Frequency Stability (K option, decoded from P/N; M temp range)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "K option; -20 ~ +70°C (M option per P/N guide)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Aging (First Year)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "@ +25°C ±3°C, first year",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "ESR",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Frequency 24.000 ~ 39.999 MHz",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature (M option, decoded from P/N)",
          "symbol": "Topr",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 70,
          "conditions": "M option -20 ~ +70°C per P/N guide; printed Topr row is Y option (-30 ~ +85°C), not this part",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Peak Solder Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 sec max; 2 cycles max",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load Capacitance",
          "symbol": "",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "Specify in P/N (8 = 8 pF)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Shunt Capacitance",
          "symbol": "Co",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Drive Level",
          "symbol": "DL",
          "kind": "electrical",
          "unit": "μW",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "ECS-320-8-37B2-CKM-TR (ECS) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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