This would require an extra calibration; therefore, you need to get a permissionahead of your design effort. Copper trace spacing: Typically 10 mils minimum. 8 mils is still good, but use it only when needed. If you need smaller separations – see note above. Hole size: 0.7 mm diameter minimum. We have smaller drills but they will be used only when justified. Drills installed in the machine include: 0.7, 0.8, 0.9, 1.0, 1.2, 1.5, 2.0, and 3.0 mm. Additional drills available w/o special request: 1.4 and 1.6 (but try to avoid them). Mechanical holes: Mounting holes and cut-outs must be defined on a separate layer – and stored in a separate file as non-THT holes (!) Use #4 screw size for typical PCB mounting – it requires a 3.0mm hole. Larger holes are milled out to any size. Rubout areas: Cutting operationsmill contours along traces, footprints, pads, and areas declared in the design graphics. In addition, double separation is made as a default setup around footprints/pads. Partial rubout may be needed for easier soldering of SMT multi-leg components. When applicable, you need to graphicallyallocate rubout areas for each copper layer but defined on separate layers (and stored in separate files). You very rarely need a complete rubout – it is a very expensive in time and tool costs. If you need to remove copper from all remaining areas then you need to provide a very strong justification.
Text/graphics guidance Silkscreen: We do not have and will not have this capability. Text/graphics: Try to avoid this option. However, if you really need text or graphics to be present on your board, then you can place it on a top and/or bottom copper layer. At this moment, we will not accept extra files holding text and/or graphics.
- Summer '19
- Printed circuit board, Senior Design Project, PCB Design, OrCAD PCB design, board contour file