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Micro vias

Design overview for high density interconnects (HDI) and laser drilled micro vias according to IPC / JPCA-2315

Micro vias type I Type I  (1C1) (1C0) Photo micro via
Multilayer with micro vias
on 1 or 2 outer layers
(min. 3 working days)
 
Micro vias type II Type II  (1C1) (1C0) Photo micro via type II
Multilayer with micro vias
on 1 or 2 outer layers
as well as buried vias
(min. 7 working days)
 
Micro vias type III Type III  (2C0) (2C1) (2C2) Photo micro via type III
Multilayer with micro vias
on 1 or 2 outer layers
and on multiple planes
as well as buried vias
(min. 10 working days)

Materials
For better reliability we prefer glass fabric reinforced laminates for micro via applications.
Dielectric: glass fabric and flexible polyimide foils.
Resin system: Epoxy, HTG epoxy or polyimide.
We also use RCC or aramid by request.