Is anyone using any NanoStar components from TI? It looks like we might be building boards with some soon. We have put down 0201's successfully. But these are a whole other ballgame. They are 0.9mm by 1.4mm with 5 or 6 balls on the bottom. Would this need to have underfill? Also inspecting is going to be a challenge. And I would not want to rework any. Are there any good online sources regarding mounting components like these? I couldn't find anything on TI's website about the actual manufacturing of products that use parts like this.
The biggest problem is getting paste on the board. We ran a board that had 8 per and would get an occasional insufficient solder joint. I would look into doing the boards with something like a SiPad process (www.sipad.net) My $0.02