What Is The Difference between PCB and PCBA?

A PCB (Printed Circuit Board) is a board that electrically connects electronic components using conductive traces, pads, and other features etched from copper foil laminated onto a non-conductive substrate. PCB’s can be single sided (one copper layer), double sided (two copper layers), or multi-layer (outer and inner layers). Conductors on different layers are connected with vias (plated-thru. holes). Multi-layer PCB’s allow for much higher component density and design complexity.

A PCBA (Printed Circuit Board Assembly) is the board after all the components and parts have been soldered and installed on the PCB and now can accomplish the electronic function it was designed for. A PCBA usually undergoes reflow furnace heating to establish a mechanical connection between the PCB and the components.

Author:Victor Zhang

Victor has over 20 years of experience in the PCB/PCBA industry. In 2003, he began his career in PCB as an Electronics Engineer at Shennan Circuits Co., Ltd., one of the top PCB manufacturers in China. During his tenure, he gained extensive knowledge in PCB manufacturing, engineering, quality, and customer service. In 2006, he founded Leadsintec, a company specializing in providing PCB/PCBA services to small and medium-sized enterprises worldwide. As CEO, he has led Leadsintec to rapid growth, now operating two large factories in Shenzhen and Vietnam, offering design, manufacturing, and assembly services to clients around the globe.