๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A routing system of single-layer printed wiring boards

โœ Scribed by Shin Futagami; Isao Shirakawa; Hiroshi Ozakis


Book ID
112074514
Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
602 KB
Volume
63
Category
Article
ISSN
8756-6621

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In the current manufacturing of printed wiring boards (PWBs), micro-drills are generally used to make smaller diameter through-holes in PWBs, which are desired for the miniaturization of equipment. However, a problem has emerged in that copper plating degraded by hole drilling can reduce the reliabi