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hi all,
is there any concern i should know of if i were to plate my pcb board with 1/2 oz copper . the outer layer thickness of the copper foil is 2 oz, that makes 2 1/2 oz all together. the circuit is high current up to 10A. the vendor is having a problem to control the plating process if i...
hi all,
is there any concern i should know of if i were to plate my pcb board with 1/2 oz tin. the outer layer thickness of the copper foil is 2 oz, that makes 2 1/2 oz all together. the circuit is high current up to 10A. the vendor is having a problem to control the plating process if i were to...
torrent netlist comparison in schematic file
Hi Zen,
Here's IPC generic standard on PCB layout. It contains most of the term and guidelines u need to know about pcb. Also you need to know you vendor capabilities, depending on your vendors those standards might vary a lil bit. I have a file on...
hi all,
in pcb assembly process, the fiducials are required for pick and place machine to load smt components on the board. what if the the fiducials are not on the board, do the components still can be loaded onto the board? does a fabricator add auxilliary fiducial marks to help their...
Hi all,
Does anyone know how to set up Differential Pair constraints and Delays and Matched Length properties on a net in Board Station Layout? For eg things like the width of the trace, the air gap between the two traces, the max length of the traces..etc,etc. I'm wondering wether these can be...
What is Star ground?
It is necessary to minimise the introduction of DC offsets and noise into the signal return paths for different parts of system (analog baseband, digital baseband, audio amplifier, LCD controller, power cct, RF tranceiver - mobile phone circutry is a good example). For eg...
via spacing guard ring frequency
hi all,
i've been asked to give a special instruction to pcb fabricator to have a small pad around a via in an inner layer. but i'm not sure why. this is a high frequency analog board. does anyone here know why? cheers!
akhmar
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