Custom-made Alu 1.5 OZ Multilayer Lighting LED PCB Assembly Service What is LED PCB Assembly? LED PCB Assembly refers to the process of mounting, soldering and electrically connecting light-emitting-diode (LED) packages and their driver/control components onto a printed circuit board (PCB) that has been specially designed for high heat dissipation, enabling the finished module to be powered and emit light immediately. Unlike conventional PCBA, LED PCB Assembly focuses on opto