pixalynx/cm5-minimal-carrier

A 4-layer Raspberry Pi CM5 carrier board routes USB‑C 5V power through an RT9742 load switch with TVS protection and capacitive filtering, while providing ESD-protected HDMI output, CM5 connectors, test points, and ground/power planes.

Version
0.1.1
License
unset
Stars
0

lib/stackup.json

{
  "manufacturer": "JLCPCB",
  "stackup": "JLC04161H-3313",
  "nominalFinishedThicknessMm": 1.6,
  "targetDifferentialOhms": 100,
  "requestedTolerancePercent": 10,
  "traceWidthMm": 0.1234,
  "traceGapMm": 0.2301,
  "status": "JLC calculator geometry recorded; order-specific impedance approval still required",
  "calculator": {
    "url": "https://jlcpcb.com/pcb-impedance-calculator",
    "checked": "2026-09-18",
    "model": "Differential Pair (Non coplanar)",
    "signalLayer": "L1",
    "referenceLayer": "L2",
    "requestedGapMm": 0.23,
    "returnedWidthMm": 0.1234,
    "returnedGapMm": 0.2301,
    "solverTolerancePercent": 0.5,
    "finishedThicknessLabelMm": 1.56,
    "note": "0.5% is the calculator search tolerance, not a fabrication guarantee. Solder mask included. No width/spacing complement."
  },
  "source": "https://jlcpcb.com/impedance",
  "layers": [
    {"name":"F.Cu","type":"copper","thickness":0.035},
    {"name":"dielectric 1","type":"prepreg","material":"3313","thickness":0.0994,"epsilon_r":4.1},
    {"name":"In1.Cu","type":"copper","thickness":0.0152},
    {"name":"dielectric 2","type":"core","material":"FR4","thickness":1.265,"epsilon_r":4.6},
    {"name":"In2.Cu","type":"copper","thickness":0.0152},
    {"name":"dielectric 3","type":"prepreg","material":"3313","thickness":0.0994,"epsilon_r":4.1},
    {"name":"B.Cu","type":"copper","thickness":0.035}
  ]
}