This document discusses, among other things, a flexible circuit or other laminate comprising a first conductive layer and a second conductive layer disposed over the first conductive layer. An insulator is disposed between the first and second conductive layers. A conductive via extends through the insulator and electrically connects the first and second conductive layers. The laminate includes a channel in the insulator. In one option, the channel extends at least part way around the via. In another option, the channel extends at least part way between the first and second conductive layers. In another example, a method comprises providing a laminate including at least first and second conductive layers and an insulator disposed therebetween. A via is formed through the insulator. A channel is formed in the insulator at least part way around the via. The channel extends between the first and second conductive layers.