runpatrick/sa-sim-pcb

footprints/bg95.tsx

// BG95-M3 LGA96 23.6×19.9mm — simplified perimeter-only footprint
// 96 pads total; this footprint covers ~42 perimeter pads with placeholders.
// ⚠️ Inner-grid pads must be added per Quectel BG95 HW Design Guide §3 before fab.
// We define 42 pads on the perimeter at 2.0mm pitch with 1.2×1.2mm pad size.
// Pin numbering follows the Quectel datasheet (south edge pin 1 → CCW).

export const bg95Footprint = () => (
  <footprint>
    {/* SOUTH edge — pads 1-12, x: -11 → +11 step 2, y = +9.95mm */}
    {[-11, -9, -7, -5, -3, -1, 1, 3, 5, 7, 9, 11].map((x, i) => (
      <smtpad
        portHints={[String(i + 1)]}
        shape="rect"
        width="1.2mm"
        height="1.2mm"
        pcbX={`${x}mm`}
        pcbY="9.95mm"
        layer="top"
      />
    ))}

    {/* EAST edge — pads 13-21, x = +11.8, y from +7.95 step -2 */}
    {[7.95, 5.95, 3.95, 1.95, -0.05, -2.05, -4.05, -6.05, -8.05].map((y, i) => (
      <smtpad
        portHints={[String(i + 13)]}
        shape="rect"
        width="1.2mm"
        height="1.2mm"
        pcbX="11.8mm"
        pcbY={`${y}mm`}
        layer="top"
      />
    ))}

    {/* NORTH edge — pads 22-33, x: +11 → -11, y = -9.95mm */}
    {[11, 9, 7, 5, 3, 1, -1, -3, -5, -7, -9, -11].map((x, i) => (
      <smtpad
        portHints={[String(i + 22)]}
        shape="rect"
        width="1.2mm"
        height="1.2mm"
        pcbX={`${x}mm`}
        pcbY="-9.95mm"
        layer="top"
      />
    ))}

    {/* WEST edge — pads 34-42, x = -11.8, y: -8.05 → +7.95 step +2 */}
    {[-8.05, -6.05, -4.05, -2.05, -0.05, 1.95, 3.95, 5.95, 7.95].map((y, i) => (
      <smtpad
        portHints={[String(i + 34)]}
        shape="rect"
        width="1.2mm"
        height="1.2mm"
        pcbX="-11.8mm"
        pcbY={`${y}mm`}
        layer="top"
      />
    ))}

    {/* Inner functional pads (selected critical signals).
        These cover key BG95 net mappings used by the schematic:
        UART_TXD, UART_RXD, USIM_*, ANT_MAIN, VBAT, RESET_N, PWRKEY, etc.
        Pin numbers above 42 are reserved for these internal pads. */}
    <smtpad portHints={["50"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="-9mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["51"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="-7mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["52"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="-5mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["53"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="-3mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["54"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="-1mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["55"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="1mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["56"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="3mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["57"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="5mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["58"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="7mm" pcbY="7.5mm" layer="top" />
    <smtpad portHints={["59"]} shape="rect" width="1.0mm" height="1.0mm" pcbX="9mm" pcbY="7.5mm" layer="top" />

    {/* Body silkscreen */}
    <silkscreenpath
      route={[
        { x: -11.8, y: -9.95 },
        { x: 11.8, y: -9.95 },
        { x: 11.8, y: 9.95 },
        { x: -11.8, y: 9.95 },
        { x: -11.8, y: -9.95 },
      ]}
    />
  </footprint>
)