VIA-HOLE CONNECTION STRENGTH MEASUREMENT DEVICE AND MEASUREMENT METHOD

摘要

PROBLEM TO BE SOLVED: To quantitatively measure the connection strength of a via-hole formed in a build-up board. SOLUTION: A measuring jig 7 is transferred in a direction parallel with a land surface 6 to which a via-hole 5 is connected, i.e., in a direction perpendicular to the center axis 'A' of the via-hole 5, to apply a shearing stress to the via-hole 5 with the jig 7. The connection strength of the via-hole is defined as a shearing load applied to the jig 7, when the via-hole is sheared and broken by the applied stress.