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On the BF533 datasheet, the BGA pad size is .55mm but should that be .39mm?

Question asked by BobK on May 15, 2009
Latest reply on May 15, 2009 by BobK

The customer writes:  “The problem is that if I follow the datasheet I should adopt a 0.55mm pad diameter. With a 0.8mm pitch it means that all the non-perimetral pads cannot be routed. I think there is a misunderstanding or a mistake in the datasheet. In other projects I've found the engineers use a 0.38mm diameter for the pads. Please what is a good advisable pad size for BC-160 balls?”