Category:PCB PCB Manufacturing

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PCB manufacturing consists of many steps, such as PCB CAM, Panelization, Copper patterning, etc. This group is mainly talked about the problems during PCB manufacturing!

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Using fiducials for individual components on a pcb Reply 2016-06-15 09:14:05
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Piet Friskus

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I have a panel needs , and I place three fiducials on each pcb for a plane needed fiducials. But some IC footprints also show local fiducials. I've seen them for instance for certain TQFP footprints. When are they required?
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Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.

gfergy

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Fiducials are used to provide better accuracy when placing components on the pcb. There is a camera that recognizes the fiducials and uses it as a registration point to calibrate where the machine thinks it is on the pcb.

PAWEL WYSZYNSKI

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BGA devices often used fiducials, because the pads can't be seen when the chip is placed in position manually. I don't think I've seen them used with TQFP parts.

Colin

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A great sharing for beginners. Thanks for your efforts and I will follow you and keep reading your posts.
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