main
John Lauer Component record for ltc2945cms-pbf: files batch 3 16c3b96 22h ago
{
 "schema": "adom/component-lod@1",
 "mpn": "LTC2945CMS#PBF",
 "units": "metres (glTF)",
 "upAxis": "Z (Adom/KiCad frame; seated on z = 0, centred on the footprint origin)",
 "status": "candidate",
 "purpose": "clean board-use models: no footprint pads, outlines, labels or silkscreen (those are only in the page hero)",
 "source": {
  "path": "ltc2945cms-pbf-etched.step",
  "sha256": "0ee38fb8644808bf680ca500c0ff633e5674394c3f3a133cebe62dbcc5e71f92"
 },
 "sourceToDisplay": "uniform scale 0.001 (mm to m); no rotation, no translation; origin = footprint origin, seat z = 0",
 "generator": "step2glb (service) + provenance/tools/materials_bycolour.py, coarse_glb.py, superlow_ms12.py; previews provenance/tools/render_glb.py",
 "removedHelpers": [],
 "levels": [
  {
   "level": "high",
   "path": "lod/ltc2945cms-pbf-high.glb",
   "sha256": "30202b2edf4937757d5d83263f3daccc24f07bfa26359a95af6b7ca225aed782",
   "sizeBytes": 186076,
   "triangles": 2190,
   "primitives": 221,
   "nodes": [
    "body",
    "Adom.LaserEtch"
   ],
   "extensions": [],
   "materials": [
    "Adom.Body (epoxy)",
    "Adom.Leads (matte tin)",
    "Adom.Body (pin-1 dimple)",
    "Adom.LaserEtch (virtual MPN)"
   ],
   "derivedFrom": "ltc2945cms-pbf-etched.step",
   "markingIncluded": true,
   "helperNodes": [],
   "derivation": "the etched GLB itself: etched STEP through step2glb --compress none, physical materials by colour (provenance/tools/materials_bycolour.py)",
   "review": "candidate: inspected as cached images (depth-buffered render); not qualified in a streaming LOD viewer",
   "preview": {
    "path": "lod/ltc2945cms-pbf-high.png",
    "sha256": "6df75861fc894f98b36ed7e9d9f520fb31b4e6f2ae19dea4007fdb5aab8dc20a",
    "view": "iso, same camera on every level"
   }
  },
  {
   "level": "medium",
   "path": "lod/ltc2945cms-pbf-medium.glb",
   "sha256": "d5033069454b883105a75ccf4bb6aee12e25fd20f191a7d9143340600dd33411",
   "sizeBytes": 113028,
   "triangles": 2190,
   "primitives": 221,
   "nodes": [
    "body",
    "Adom.LaserEtch"
   ],
   "extensions": [
    "KHR_mesh_quantization"
   ],
   "materials": [
    "Adom.Body (epoxy)",
    "Adom.Leads (matte tin)",
    "Adom.Body (pin-1 dimple)",
    "Adom.LaserEtch (virtual MPN)"
   ],
   "derivedFrom": "ltc2945cms-pbf-etched.step",
   "markingIncluded": true,
   "helperNodes": [],
   "derivation": "the etched STEP through step2glb with its default KHR_mesh_quantization; same tessellation, virtual mark kept",
   "review": "candidate: inspected as cached images (depth-buffered render); not qualified in a streaming LOD viewer",
   "preview": {
    "path": "lod/ltc2945cms-pbf-medium.png",
    "sha256": "ea025db83bbb3e41e31971209eb61d7a5c9dc57891b2048438bf18bc79b110f7",
    "view": "iso, same camera on every level"
   }
  },
  {
   "level": "low",
   "path": "lod/ltc2945cms-pbf-low.glb",
   "sha256": "b7877258052a401fce430b70722d24565a5c2ac37615bd6129dad5fa79ad4bca",
   "sizeBytes": 66392,
   "triangles": 1304,
   "primitives": 3,
   "nodes": [
    "MSOP-12_3x4.039mm_P0.65mm"
   ],
   "extensions": [],
   "materials": [
    "Adom.Body (epoxy)",
    "Adom.Leads (matte tin)",
    "Adom.Body (pin-1 dimple)"
   ],
   "derivedFrom": "ltc2945cms-pbf.step",
   "markingIncluded": false,
   "helperNodes": [],
   "derivation": "the unmarked STEP re-meshed by OCCT BRepMesh at 0.02 mm linear / 0.9 rad angular deflection (provenance/tools/coarse_glb.py); gull-wing bends kept as chords, pin-1 dimple kept, mark omitted (unreadable at this size)",
   "review": "candidate: inspected as cached images (depth-buffered render); not qualified in a streaming LOD viewer",
   "preview": {
    "path": "lod/ltc2945cms-pbf-low.png",
    "sha256": "9fc899b50c2a41cf9eb9c2a0984f47105072aa5c51511dfd63af63b8cc4f6f43",
    "view": "iso, same camera on every level"
   }
  },
  {
   "level": "super-low",
   "path": "lod/ltc2945cms-pbf-super-low.glb",
   "sha256": "330d5d8a5f176388b7c6f7d37e854270ed20bea3a696ed9d47a3bbcb4f594874",
   "sizeBytes": 47856,
   "triangles": 348,
   "primitives": 126,
   "nodes": [
    "body",
    "pins"
   ],
   "extensions": [
    "KHR_mesh_quantization"
   ],
   "materials": [
    "Adom.Body (epoxy)",
    "Adom.Leads (matte tin)"
   ],
   "derivedFrom": "provenance/tools/superlow_ms12.py",
   "markingIncluded": false,
   "helperNodes": [],
   "derivation": "a box stand-in built from the measured dimensions (provenance/tools/superlow_ms12.py: body box, each lead as foot + riser + shoulder), step2glb quantized; silhouette, 12 leads and seating plane kept; mark and pin-1 dimple omitted",
   "review": "candidate: inspected as cached images (depth-buffered render); not qualified in a streaming LOD viewer",
   "preview": {
    "path": "lod/ltc2945cms-pbf-super-low.png",
    "sha256": "cbc5281c14b586046e007db7ba70f112a0ad4ab38a1f93c2b39fb8883afb3cb6",
    "view": "iso, same camera on every level"
   }
  }
 ],
 "hints": [
  "All four levels share pose and units. high and medium carry the virtual MPN (Adom.LaserEtch); low and super-low omit it."
 ]
}