Kathy,

Di-functional  is being replaced by tetra-functional pcb epoxy
resin.  Tetra provides a better mechanical stability amd 10'c
higher Tg than Di.  Di is used usually  for double side pcb only,
and Tetra is for double and multi-layer boards.  You should get a
better performance with Tetra.

No idea with solder masks,  Just go for it and fix problem later if
it ever happens (Opps.. just kidding OK?).   Try sample boards
with Tamura DSR2200 and then go for it.   I am sure any LPISM
specification is more or less same with any other.

regards
Matthew Park
NII - Norsat International Inc.


>>> Kathy Palumbo <[log in to unmask]>
September 2, 1998  10:13 am >>>
Currently our PCB house is using a lamination material called
Nanya
di-functional, and are requesting to change to Nanya
Tetra-functional.

They would also like to change the soldermask they use from
Taiyo PSR 4000
to Tamura DSR 2200.

They state they have run extensive tests and found the substitute
materials
to be as good or better than the current material they use.

Since I am not familiar with these materials I was wondering if
any of you
technetters have any comments with regards to whether you
think this would
be an acceptable change or not.

You input with regards to this matter is, as always, greatly
appreciated!!

Thanks,
Kathy Palumbo

################################################################
TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line
Services" section for additional information.
For technical support contact Hugo Scaramuzza at
[log in to unmask] or 847-509-9700 ext.312
################################################################

################################################################
TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################