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.
Read More: Types of PCB Layers and Optimization
#PCB Design
I am looking to order a prototype PCB and all the manufactures I’ve gotten a quote from all offer to include a Laser stencil, some charge for the stencil some are given free with the board. After looking online to me it looks like the laser stencil just shows the outlines of the pads. So Why have a laser stencil? what advantages do you get from having one?
I have designed a power supply card using V7805-2000. Copper thickness is 70 microns, board size is 5 cm × 5 cm. When this underwent vibration test the regulator came off, broken into two pieces(regulator leads are in the holes). How is it going?
I’m making a 4 layer PCB prototype that uses a bluetooth mcu connected to a 2.4GHz chip antenna. I’m thinking about what to do with the feedline, whether it should be buried on one of the middle layers, or left on the top layer. To get a 50 ohm line, should I choose top layer with 13-mil width or buried miccrostrip with 7-mild width?
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