It means lC and component which is connected to Ground. If a Ground plane is made as a separate layer, all these pins are to be connected. It can boost the performance of circuitry in certain conditions.
Sometimes vias are used for connections to ground planes.
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This question is about the advisability of continuing to use a USB mini-B right angle surface mount connector in my pcb designs. On occasion we see one of these connectors peel back or delaminate off the pcb. Immediately the question is asked, why didn’t you use a through hole connector?
Is er een algemene regel over hoeveel speling u moet toevoegen aan componenten met doorlopende gaten?’ gaten zodat ze gemakkelijk passen? Bijvoorbeeld, if I have a component with 1mm pin diameter, what should the diameter of the holes for it’s pads be?
Recently we are developing a portable device which should be very tiny and light. In terms of PCB design, I am thinking whether it is a good idea to exclude ground plane to minimize the product size.
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