PCB panel specifications

PCB panel specifications

1. The width of the PCB circuit board is less than or equal to 260mm (SIEMENS line) or less than or equal to 300mm (FUJI line); if automatic dispensing is required, the width of the PCB panel × length ≤ 125mm × 180mm.

2. The shape of the panel is as close to a square as possible. It is recommended to use 2 × 2, 3 × 3,….

3． The outer frame (clamping edge) of the circuit board panel should adopt a closed loop design to ensure that the PCB panel will not be deformed after it is fixed on the fixture.

4． The center distance between the small plates is controlled between 75mm and 145mm.

5． There should be no large devices or protruding devices near the connection points between the outer frame of the panel and the inner small board, and between the small board and the small board, and there should be more than 0.5mm of space between the edges of the components and the PCB board to ensure that The cutting tool is operating normally.

6. Four positioning holes are opened at the four corners of the outer frame of the jigsaw, with a hole diameter of 4mm ± 0.01mm; the strength of the hole must be moderate to ensure that it will not break during the upper and lower plates; the hole and position accuracy should be high, and the hole wall should be smooth without burrs.

7. Each small board in the circuit board panel must have at least three positioning holes, 3mm ≤ aperture ≤ 6mm, and no wiring or patch is allowed within 1mm of the edge positioning holes.

8. The reference symbols used for the entire board positioning of circuit boards and the positioning of fine-pitch devices, in principle, QFPs with a pitch of less than 0.65mm should be set at their diagonal positions; the positioning reference symbols used for imposition circuit boards should be used in pairs and arranged On the opposite corner of the positioning feature.

9. When setting the reference anchor point, leave a solder mask area 1.5 mm larger than the anchor point.