Optical array chip packages with passive alignment features

An adhesive layer is applied to the surface of a flat, transparent flexible circuit that contains electrically conductive traces one, or more, electronic components is secured by the adhesive layer to the flexible circuit. A dam is formed that encircles at least a substantial portion of the component. A potting material fills the dam such that it encapsulates at least a substantial portion of the component. At least one via is provided in the flexible circuit and the adhesive layer in which electrically conductive material forms an electrical connection to the component. Additional vias are formed in the flexible circuit and the adhesive layer as required to make electrical connections to the traces of the flexible circuit. The component may be secured to a heat sink and the potting fill material may be removed to that it does not entirely cover the surface of the heat sink so that the surface of the heat sink that is remote from the component allows heat to escape into the surrounding environment. Additional flexible circuits may be secured to the first flexible circuit layer, and additional vias with electrically conductive material may be used to connect to the electrically conductive traces of the same, or different layers. The assembly is particularly advantageous for optical components wherein the flexible circuit is positioned adjacent the optical component and allows optical signals to be transmitted through the flexible circuit.