Yes - the trend is toward .002" resist for external/plated layers.  The
main reason is to keep the plating within the channel and provide better
stripping and etching for the sub-.005" lines/spaces.  We have converted
all the .002" resist for external layers and are actually looking at a
.0025".  This is a typical trend in the industry and you will find
better results for fine line processing.  The main issues is keeping the
cost level with the .0015" - which should be do-able with most suppliers
depending on you relationship.



Jeffrey Bush
Director, Quality Assurance and Technical Support

                          76 Technology Drive - POB 1890
                             Brattleboro, Vermont 05302-1890
                                Tel. 802.257.4571.21 Fax. 802.257.0011
                                    [log in to unmask]
                              http://www.vtcircuits.com	



-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]] 
Sent: Friday, July 09, 2004 9:39 AM
To: [log in to unmask]
Subject: [TN] Dry Film


Good Friday to all. We've used 1.5mil dry film for quite a while but now
our supplier tells us EVERYONE has switched to 2.0mil. If we choose to
continue with the 1.5 we need to place our order 3-4 weeks in advance.
Am I just behind the curve here or is it time to shop for better
service? Thanks.

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