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Post AtVOTydWG2z4A2suEC by [email protected] |
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More posts by [email protected] |
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Post #AtVOTy6YEcc2VnSZqC by [email protected] |
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New polishing fixture mods seem to work well.Used P180 in 2-minute steps to get… |
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Post #AtVOTyDzmwZEsswWRc by [email protected] |
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Talk to your kids about metallography. If you don't, who will? |
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Post #AtVOTyK1QXO7BZlKq0 by [email protected] |
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After five 2-minute cycles of P400 abrasive, removing 5.5 - 11 um/min.Die attac… |
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Post #AtVOTyQP2oUZVMkQme by [email protected] |
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Took a few more passes than that.Threw the removal rates into a spreadsheet and… |
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Post #AtVOTyWmf5b1p9jWjI by [email protected] |
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Huh. I wonder if the P400 is worn out or something went wrong with my measureme… |
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Post #AtVOTydWG2z4A2suEC by [email protected] |
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After one cycle at P1200. Lots of small scratches, hard to tell if it was addi… |
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Post #AtVOTyjXtdnwSjhica by [email protected] |
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After one 2-min cycle of P2500. Definitely not long enough.Gonna throw it back … |
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Post #AtVOTypvVuuOmWgoZE by [email protected] |
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I've also reached the limit of what I can do as far as measuring material r… |
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Post #AtVOTyx15Ya18W0TcO by [email protected] |
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I swear I grabbed more than one photo but maybe I didn't click the trigger … |
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Post #AtVOTz3OhpgTSIzZZ2 by [email protected] |
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Nice view of a MLCC seen end-on |
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Post #AtVOTzA8In4VnC8x3w by [email protected] |
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Right side of the die isn't even fully exposed after 20 minutes.I think I m… |
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Post #AtVOTzGVv4Ay6z830a by [email protected] |
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Back to P1200 for 2 mins. Just touching the leftmost bond wires. More scratches… |
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Post #AtVOTzMtXLHQQm78xE by [email protected] |
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Two more mins at P1200 and the leftmost couple of ball bonds are exposed. More … |
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Post #AtVOTzTd8IfSlfGWS8 by [email protected] |
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Ten minutes at P2500 and it's looking really good. Beautiful wire bonds, cl… |
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Post #AtVOTza0kZlv5SFcOm by [email protected] |
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Five minutes of 3um diamond. Not sure this did much of anything. It actually lo… |
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Post #AtVOTzgOMqsNPFEiLQ by [email protected] |
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Five minutes of 60nm colloidal alumina plus some sonication to get off the abra… |
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Post #AtVOTzmlz7ypj2DoI4 by [email protected] |
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Solder on an ENIG-coated pad. Not sure if this was a DNP footprint or if there&… |
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Post #AtVOTzsncini1j2cgS by [email protected] |
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Left side of the die-package interface. Looks absolutely flawless. |
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Post #AtVOTzztCMTKNiMHjc by [email protected] |
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Closeup of the top left corner. Aluminum layer looks like it might be slightly … |
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Post #AtVOU05upxICgPB680 by [email protected] |
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Single bond pad/wire seen up close. The aluminum doesn't look that great, b… |
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Post #AtVOU0EmJ0Nj7tKAwS by [email protected] |
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@azonenberg I don’t know how it’d go at this scale or with the other materi… |
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Post #AtVOU47Ts4vBAPwP7g by [email protected] |
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Thinking more: I could probably get more resolution on material removal rates i… |
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Post #Atj4vJWDRr6psHfJ7w by [email protected] |
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@azonenberg Cool! Lucky kids. |
