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We proposed the stcakup to manufacturer is 4 layer stack up with laser vias from layer 1 to2 ,2 to3 and 3 to 4 ,mechanical via from layer 1 to 4.2 f* u! l) V3 v% F
0 X7 v; e' Q) N! X* Vbut Manufacturer splitted the mechanical vias from layer 1 to 4 in to stacked vias* q: g. o- g- Q
5 k" M2 h9 w& R5 }) {0 a! K0 |- q) BMy question is why manufacturer changed mechanical via to stacked via?
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0 t `0 e# ?" v+ pcost also will increase while using stacked vias?
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