Electronics package for light emitting semiconductor devices and method of manufacturing thereof

A light emitting semiconductor (LES) device having desirable thermal performance characteristics is disclosed. The LES device includes an insulating substrate layer having a plurality of vias formed therein and at least one LES chip mounted on the insulating substrate layer, with each of the LES chips(s) including an active surface including a light emitting area configured to emit light therefrom and a back surface positioned on a top surface of the insulating substrate layer and including connection pads thereon. A conductor layer is positioned on a bottom surface of the insulating substrate layer and in the vias, the conductor layer in direct contact with the connection pads of the LES chip(s) so as to be electrically and thermally connected thereto. An encapsulant is positioned adjacent the top surface of the insulating substrate layer and surrounding at least part of the LES chip(s), the encapsulant comprising a light transmitting material.