Hi Technetters !
During the past period we made a lot of improvements in our production to
reduce the scrap due to internal shorts . At this moment 90% of internal
shorts are " isolation shorts " , it mean high resisitivity .
Some of this shorts were located and we found unidentificed spots in the
laminates . The spots are located under the conductors ( laminate side ) ,
they have irregular shapes and are very thin . Such spots are bridging two
adjacent conductors . Such spots are not result of unetched copper since
they are running deep into the laminate ( more than 25 microns ) .
I will appreciate comments on this problem via technet or to my private e-mail .
Best regards
Edward Szpruch
Eltek Ltd - Israel
Tel 972 3 9395050
Fax 972 3 9309581
E-mail : [log in to unmask]
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