Does the thermal excursion that the PWB sees at wave solder contribute significantly to the reliability of partially filled PTVs? Where can I find data on the reliability of partially filled PTVs in multilayer boards? Paul Ziarek Johnson Controls ([log in to unmask] ______________________________ Reply Separator ____________________________ _____ Subject: Re: [TN] filling vias! Author: [log in to unmask] at JOHNSON_CONTROLS