Gịnị bụ microvia?
Dịka nkọwa ọhụrụ dị n'ime IPC-T-50M si dị, microvia bụ ihe owuwu kpuru ìsì nke nwere oke akụkụ kachasị nke 1:1, na-akwụsị na ala ebumnuche ya nke nwere omimi zuru oke nke na-agaghị agafe 0.25mm nke a tụrụ site na foil njide ala nke ihe owuwu ahụ ruo na ala ebumnuche ya.
IPC-6012 na-akọwakwa usoro nke Microvia.
Microvia bụ ihe owuwu kpuru ìsì nke nwere oke akụkụ kachasị elu nke 1:1 n'etiti dayameta oghere na omimi ya, yana omimi zuru oke nke na-agaghị agafe 0.25 mm, mgbe a tụrụ ya site na elu ruo na pad ma ọ bụ ụgbọelu a na-atụ anya ya.
N'ozuzu, NCAB na-ewere ọkpụrụkpụ dielectric dị n'etiti elu na mpempe akwụkwọ ntụaka dị ka 60 - 80um.
Oke dayameta nke microvia nwere oke nke 80-100 microns. Nhazi RATIO a na-ahụkarị dị n'etiti 0.6: 1 ruo 1: 1, nke kacha mma 0.8: 1