today I learned that we (as a civilization) now can put 16 silicon flash dice into a single 700µm microSD card on a commercial scale https://www.ose.com.tw/en/ic-services/memory-product-package/microsdsd
@whitequark✧✦Catherine✦✧ Once I found out that someone had tried stacking another die on top of a cellphone radio chip I had worked on. They didn't discuss it with us designers beforehand and it didn't work - they had put something conductive over the inductors, which makes a shorted turn and reduces the inductance and Q. I guess a ~200um layer of glass etc. in between would have fixed it.
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