A composition including (a) 20 to 85 wt % of a thermally conductive silver component containing silver nano-particles having a particle diameter of 5 to 500 nanometers; (b) a polyorgano-silsesquioxane component, the polyorganosilsesquioxane component selected from the group consisting of (i) 0.5 to 12 wt % of a polyorganosilsesquioxane fine powder, (ii) 0.5 to 8 wt % of a copolymer powder containing an interlacing polymer network of (I) a polyorganosilsesquioxane and (II) a polydiorganosiloxane; and (iii) 0.5 to 12 wt % of a combination of the polyorgano-silsesquioxane fine powder and the copolymer powder; and (c) 3 to 12 wt % of a total solvent content in the form of (i) one or more solvents, (ii) a vehicle containing one or more solvents, or (iii) a combination thereof.