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Honored Contributor
Honored ContributorWQFN148 Usage Restriction -- 32 mil PCB thickness
We're using an EP4CGX15BN11C7N Cyclone IV device in a WQFN148 package on an extremely tiny board. The mechanical definition document states that the part shouldn't be used in boards more than 3...
Altera_ForumHonored Contributor
Honored ContributorYou'll find some information about reliability of micro-leadframe packages related to board thickness at amkor.com web site. See particularly pg 15 of this presentation http://www.amkor.com/index.cfm?objectid=42ef136e-5056-aa0a-e20f61ed99fb26f7
http://www.amkor.com/go/packaging/document-library
