A semiconductor chip assembly includes a semiconductor device, a heat spreader, a conductive trace and an adhesive. The heat spreader includes a post, a base and a ceramic block. The post extends upwardly from the base into an opening in the adhesive, the base extends laterally from the post and the ceramic block is embedded in the post. The semiconductor device overlaps the ceramic block, is electrically connected to the conductive trace and is thermally connected to the ceramic block. The adhesive extends between the post and the conductive trace and between the base and the conductive trace. The conductive trace provides signal routing between a pad and a terminal.