Hello Everyone,
I'm doing a 6-layer PCB with two 676-pin 1mm spacing BGAs. I got this sponsorship deal with Sunstone, so they are paying for my degree project since I am entering it into a national competition.
I ran into a major problem! I really didn't think 1mm BGAs were very advanced, but apparently I cannot use this company at all to do this. Their annular ring specification is 8.5mils and their minimum via is 8mils. This means that I have a 25mil or 0.98mm pad. I called and they said that they are incapable of doing anything smaller than a 8.5mil annular ring.
http://www.sunstone.com/pcb-capabilities/manufacturing-capabilities.aspx
Am I missing something here? Most manufacturers spec. annular ring separately for vias and pads? such as
http://www.4pcb.com/index.php?load=content&page_id=15
Or, did I get someone on the phone that didn't have a clue?
I'm pretty stressed because I had a golden ticket for a 500$ PCB, now it seems that I can't cash it in because they are in the stone-age with their PCB capabilities.
Steve
I'm doing a 6-layer PCB with two 676-pin 1mm spacing BGAs. I got this sponsorship deal with Sunstone, so they are paying for my degree project since I am entering it into a national competition.
I ran into a major problem! I really didn't think 1mm BGAs were very advanced, but apparently I cannot use this company at all to do this. Their annular ring specification is 8.5mils and their minimum via is 8mils. This means that I have a 25mil or 0.98mm pad. I called and they said that they are incapable of doing anything smaller than a 8.5mil annular ring.
http://www.sunstone.com/pcb-capabilities/manufacturing-capabilities.aspx
Am I missing something here? Most manufacturers spec. annular ring separately for vias and pads? such as
http://www.4pcb.com/index.php?load=content&page_id=15
Or, did I get someone on the phone that didn't have a clue?
I'm pretty stressed because I had a golden ticket for a 500$ PCB, now it seems that I can't cash it in because they are in the stone-age with their PCB capabilities.
Steve