Jim,

It seems there are quite a few fab houses doing the micro-via thing now.

Just out of curiosity, are the vias you are specifying finished
plated-through hole sizes?  These finished hole sizes can be acheived
through drilling with .008 to .0135 drill bits.  Do you have very thin
dielectric requirements?  Why are you specifying micro-via technology to
build these?

Steve U.

On Mon, 23 Aug 1999 15:49:41 -0600 Jim Kittel
<[log in to unmask]> writes:
>Fellow TechNetters,
>
>We are are moving into the assembly/design of circuit card assemblies
>using
>micro via technology and I need a lead on some PWB vendors that can
>fabricate boards with buried or blind micro vias.  These designs will
>require vias in the 0.004 to 0.008 inch diameter range with 0.004 inch
>trace
>widths.  I would like to find a supplier that can do the entire
>process in
>house.  The finish will be nickle/immersion gold, typically FR-4 or
>polyimide and we are talking small order sizes.
>
>Any ideas on who to contact?
>
>Jim Kittel
>
>##############################################################
>TechNet Mail List provided as a free service by IPC using LISTSERV
>1.8c
>##############################################################
>To subscribe/unsubscribe, send a message to [log in to unmask] with
>following text in
>the body:
>To subscribe:   SUBSCRIBE TECHNET <your full name>
>To unsubscribe:   SIGNOFF TECHNET
>##############################################################
>Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
>additional
>information.
>If you need assistance - contact Gayatri Sardeshpande at
>[log in to unmask] or
>847-509-9700 ext.5365
>##############################################################

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################