April 2015 • The PCB Magazine 1
April 2015
High-Density
Interconnects:
Enabling the
Intelligence
of Things
Splitting Hairs:
The Manufacture
of HDI and
Substrate
Test Fixtures
20
32
HDI
Next-Generation Ultra-Thin
HDI PCB Manufacturing
Challenges
by Tarja Rapala-Virtanen, Erkko Helminen
and Timo Jokela, page 8
