ELECTRONIC CIRCUIT ASSEMBLY HAVING HIGH CONTRAST FIDUCIAL

摘要

PROBLEM TO BE SOLVED: To provide a fiducial and a through hole which provide a high contrast between the fiducial and the surrounding substrate permitting viewing and recognition of substrate orientation by a computer vision system.

SOLUTION: An electronic circuit assembly comprises: a lower layer substrate having the fiducial; and an upper layer substrate which is adjacent to the lower layer substrate, and has a component and the through hole which extends through the upper layer substrate aligned with the fiducial on the lower layer substrate.

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