Electronics Forum | Sat Jan 08 06:46:33 EST 2022 | jineshjpr
Hi anyone knows what is the minimum copper foil thickness available across the industries to make PCB surface. Intention is to achieve 23 microns of finished copper thickness in a 0.3mm thickness PCB. Ideally if 3 microns plates are available, additi
Electronics Forum | Tue Jan 31 13:55:56 EST 2006 | samir
Anyone know what the general rules / requirements are for micro-BGA's and CSP's as to when capillary underfill is required? (ie size of bump/ball, package thickness, PCB/CSP thickness ratios, etc).
Electronics Forum | Tue Jul 19 11:53:04 EDT 2005 | CLampron
seaK, Check your PCB Thickness check in your program. See if it is checking the PCB at this location. Each board the machine will check to find the baseline thickness of each board run. It does this with a tool. I'm thinking this may be it because I
Electronics Forum | Tue Jul 19 12:03:34 EDT 2005 | cyber_wolf
CLampron, There is no place for PCB thickness in a Mydata program. The board thickness is of no consequence.(As long as the thickness is uniform across the entire board) When you run a program, the Z axis touches the surface of the board to determin
Electronics Forum | Sun Sep 04 23:03:04 EDT 2005 | cabs
Thanks.... Can u direct me to a link or website of the companies that can perform this test???
Electronics Forum | Wed Sep 07 05:34:08 EDT 2005 | cabs
Thanks you so much for this information.... this will help a lot...
Electronics Forum | Tue Mar 09 19:40:47 EST 2004 | Vijay
The shorts happen at corner of the BGA. The PCB thickness is 1.6mm, It is a PC motherboard with all thru hole connectors mounted on.The preheating is done using IR heater and the temp is 120-160 for about 70-80 sec.I am using ERSA IR550A
Electronics Forum | Tue Mar 09 19:40:55 EST 2004 | Vijay
The shorts happen at corner of the BGA. The PCB thickness is 1.6mm, It is a PC motherboard with all thru hole connectors mounted on.The preheating is done using IR heater and the temp is 120-160 for about 70-80 sec.I am using ERSA IR550A
Electronics Forum | Tue Dec 06 05:40:12 EST 2005 | ajay
we also faced similar problem in fuji cp643. addition to your suggestion - mainly in program PCB thickness, component height checked & set correctly , then problem solved.
Electronics Forum | Wed May 06 04:31:42 EDT 2009 | radzi
We have prob Solder voids for Connector, Micro D. We used HMP solder wire and pcb thickness is 0.093".
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