Altera_Forum
Honored Contributor
Honored Contributor256 FBGA Footprint
I cannot seem to find the land pattern recommendations for the EP3C5F256C8N 17X17 256 FBGA. Anyone know where they are?
RichForum Discussion
3 Replies
Altera_ForumThe altera device package information data sheet doesn't specify land patterns. Industry standard land patterns should be applied. For 1 mm grid FBGA, 0.45 - 0.55 mm pad diameter (NSMD, not solder mask defined = soldermask > pad) is specified, 0.45 mm mostly used.
- Altera_Forum
In the past, I've used Valor PCB Matrix land pattern viewer for getting the recommended IPC dimensions.
It looks like Valor is part of Mentor now: http://www.mentor.com/products/pcb-system-design/pcbmatrix One of their libraries may have the 256 BGA patterns. Cheers, Dave - Altera_Forum--- Quote Start --- The altera device package information data sheet doesn't specify land patterns. Industry standard land patterns should be applied. For 1 mm grid FBGA, 0.45 - 0.55 mm pad diameter (NSMD, not solder mask defined = soldermask > pad) is specified, 0.45 mm mostly used. --- Quote End --- I guess that is all I need to know! Thanks. Rich
