Hi TechNetters,

We do some testing  of  bare board right now.  Can anyone point out what
different between board with solder mask and without solder mask  on
electrical testing process? If we apply 250 voltage on 3.5 mil spacing
pattern , will it damage electrical character? Is there copper migration
occuring during 250 voltage testing?

Howard Lin

##############################################################
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 Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################