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marce's latest activity

  • M
    marce replied to the thread Trapezoid shape of traces.
    Figure 1 is correct, the wider part of the trapezoid will always be next to a core. As you etch down through the copper, you also loose...
  • M
    marce replied to the thread DS90UB960-Q1 Length matching issue.
    I would worry about not achieving the correct skew, during layout... If it is not achieved then the layout is incorrect and needs changing.
  • M
    marce replied to the thread PCB design tools.
    I agree with FvM. If you compare ( preferably by doing a real design) all the PCB packages, you will find they all have positive and...
  • M
    marce replied to the thread High speed signal routing layers.
    A lot of designs use microstrip (surface routing) for high speed routing, faster (less propagation than stripline), half the signal is...
  • M
    marce reacted to KlausST's post in the thread stitching via with Like Like.
    So exactly like marce said. FvM clearly wrote: "it's irrelevant if the planes are assigned to ground or supply potential, just...
  • M
    marce reacted to FvM's post in the thread stitching via with Like Like.
    I'd avoid splitted planes in the first place.They are potentially causing problems, e.g. forming an antenna sending and receiving EMI.
  • M
    marce replied to the thread stitching via.
    The capacitor is there to provide a path for the high speed return current...
  • M
    marce replied to the thread Dielectric material selection.
    Talk to PCB manufacturers you may use, they are the best to advise on the best options... Don't use Teflon unless you absolutely have...
  • M
    marce replied to the thread Cadstart exporting DXF and cutout into board outline.
    Far easier to export the DXF from the manufacture/artwork, set up the image you want and plot to DXF, job done. Used Cadstar since day 1...
  • M
    marce replied to the thread BS60669 Creepages / Clearances?.
    Look for creepage and clearance web site... Cannot remember the name, but there is a web site that will give a lot of info, including...
  • M
    marce replied to the thread power VIA question.
    https://www.qorvo.com/products/p/QPA2575#documents Download and look at example Gerber's...
  • M
    marce reacted to D.A.(Tony)Stewart's post in the thread Blind via vs regular via with Like Like.
    Saturn's tool is free.
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