David, Like Jason said Filled VIP is not a new technology and has been around for a decade now. You do need an experienced supplier as it can get messy otherwise. You need to look at the material you are going to use and make sure the material can withstand your process, i.e. thermal, CTE, etc. I don't know your design parameters so I cannot give you a lot more details but there are ways to cap the filled via to give you a more solderable surface. If you are going to do epoxy filled watch the position of the via as it can compromise the integrity of the solder joint. What diameter VIP to you have and on what size and type of device? RUSSELL NOWLAND ALCATEL-LUCENT REPAIR STRATEGY & SUPPLIER MANAGEMENT 14000 Quail Spring Parkway, Suite 100 Oklahoma City, OK 73134 T: +1 405 302 1660 F: +1 405 302 1622 M: +1 405 203 0034 [log in to unmask] -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of David Bealer Sent: Tuesday, April 23, 2013 8:17 AM To: [log in to unmask] Subject: [TN] Via in pad using filled or plugged vias We are looking at the possibility of using boards designed with vias in pad and having those vias filled. What should we be concerned with? ( I know this is a overly broad question, just looking for a place to start.) Thanks, David Bealer SMT Department Manager office 800-637-2645 x6022 cell 217-474-8760 email [log in to unmask]<mailto:[log in to unmask]> Watchfire Headquarters * watchfiresigns.com<http://www.watchfiresigns.com/> sales 800-637-2645 service 866-637-2645 ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________