CX3225GA08000D0PTVTT - 8 MHz Automotive Crystal, 3.2 x 2.5 mm - provenance/footprint.json

by adom

Kyocera CX3225GA08000D0PTVTT: 8 MHz fundamental quartz crystal, 8 pF load, +-50 ppm, -40 to +150 C, AEC-Q200, 3.2 x 2.5 x 0.85 mm ceramic SMD with 2 pads. KiCad symbol and footprint from Kyocera's land pattern, datasheet-built 3D model, Fusion and Altium libraries.

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John Lauer LODs, models.json, verification log, provenance and tools, README, license c543194 16h ago

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{
 "schema": "adom/footprint-provenance@1",
 "mpn": "CX3225GA08000D0PTVTT",
 "date": "2026-10-21",
 "file": "cx3225ga08000d0ptvtt.kicad_mod",
 "sha256": "63d13204bc5077360a5df69eab15ae3654d11cbff7dd5178ae56fdffb78bd1da",
 "built_with": "adom-footprint create (provenance/footprint-create.json), then hand edits: pin-1 silk bracket at x = -2.06 (as KiCad's crystal footprints do), F.Fab outline with a pin-1 chamfer, ${REFERENCE} on F.Fab, value set to the MPN, model binding to the etched STEP",
 "source": {
  "doc": "Kyocera CX3225GA catalog (As of October 2025), Recommended Land Pattern",
  "file": "docs/cx3225ga08000d0ptvtt-datasheet.pdf",
  "figure": "docs/figures/cx3225ga08000d0ptvtt-ds-p1-dimensions-land-pattern.png"
 },
 "pad_comparison": [
  {
   "pad": "1",
   "kyocera": "1.6 x 2.6 mm rectangle, left",
   "footprint": "rect 1.6 x 2.6 at (-1.0, 0)",
   "match": true
  },
  {
   "pad": "2",
   "kyocera": "1.6 x 2.6 mm rectangle, right",
   "footprint": "rect 1.6 x 2.6 at (+1.0, 0)",
   "match": true
  },
  {
   "item": "gap between pads",
   "kyocera": "0.4 mm",
   "footprint": "0.4 mm (inner edges at +-0.2)",
   "match": true
  },
  {
   "item": "overall span",
   "kyocera": "1.6 + 0.4 + 1.6 = 3.6 mm",
   "footprint": "-1.8 to +1.8 mm",
   "match": true
  },
  {
   "item": "pad shape",
   "kyocera": "plain rectangles",
   "footprint": "rect (no corner rounding added, per the drawing)",
   "match": true
  }
 ],
 "package_vs_land": "Package 3.2 x 2.5 mm sits inside the 3.6 x 2.6 mm land; the electrodes (0.6 mm gap, outer arc to 1.48 mm) land fully on the pads; the dashed package outline in Kyocera's land drawing agrees.",
 "courtyard": "0.25 mm around the pads (+-2.05 x +-1.55 mm), IPC-7351 nominal",
 "silkscreen": "lines at y = +-1.51 mm (0.15 mm clear of the pads) and a vertical bar at x = -2.06 marking pad 1; nothing over copper",
 "kicad_library_comparison": {
  "footprint": "Crystal.pretty/Crystal_SMD_3225-4Pin_3.2x2.5mm.kicad_mod",
  "pads": "4 pads 1.4 x 1.2 mm at (+-1.1, +-0.85)",
  "verdict": "does not fit, and is unsafe for this part: CX3225GA has two large electrodes and no ground or case pads. On KiCad's 4-pin pattern the left electrode covers pads 1 and 4 and the right electrode covers pads 2 and 3, so a 4-pin crystal symbol (1 and 3 crystal, 2 and 4 GND) would short each crystal terminal to ground through the part. Kyocera's own 2-pad land pattern is used instead; KiCad has no 2-pad 3225 crystal footprint."
 },
 "pin1": "pad 1 = the electrode with the R0.3 inner corner in Kyocera's bottom view (Kyocera numbers neither pad; the crystal is not polarised)."
}