■PCB circuit board proofing and cutting size

  ①Maximum panel size: 530 * 622mm (spray tin plate: 450 * 622mm / MAX. It depends on the equipment capacity)

  ②Pay attention to the problem of the latitude and longitude of the board with more than six layers (must be the same), which can easily cause poor compression.

  ③The size of the reserved surface of the multilayer board (8-10 layers of four-layer boards 10-15 over six layers mm)

  ④Commonly used boards containing copper core (0.2-3.2mm under 0.1mm radian), common boards without copper core (** radian of 0.05-1.75mm)

  Inner/outer layer

  PCB circuit board proofing is positive

  ①0.03mm (Hoz) compensation, copper thickness increased by 1oz, compensation increased by 0.025mm

  ②The width of the welding ring requires Hoz 0.15mm pth 0.18 (limit 0.13 0.16)

                 1 ounce (0.17 mm depth 0.20) (limit 0.15 0.18)

                 2 ounces (0.19 mm depth 0.22) (limit 0.17 0.20)

  The copper thickness is increased by 1 ounce, and the compensation is increased by 0.02 mm

  ③Cutting the copper wire: ensure the minimum wire distance: 0.4mm to 0.15mm from the copper wire (0.3mm from the PAD and the wire)

          Copper hole: 0.250mm line: 0.15mm pad: 0.2mm four-layer board

          Copper hole: 0.250mm line: 0.18mm pad: 0.2mm above the six-layer board

          The copper wires generated during the copper extraction process must be removed, and the small holes in the copper skin must also be filled.

   For ringless pth and NPth holes, 0.2mm copper should be cut on one side. If the distance cannot be ensured, drill twice.