Joy Technology Co.,Limited

 (SMC, or Surface Mounted Components) are mounted directly onto the surface of printed circuit boards (PCBs).

Electronic devices so made are called surface-mount devices or SMDs. In the industry it has largely replaced the 

through-hole technology construction method of fitting components with wire leads into holes in the circuit board.

no leads at all.

 

It may have short pins or leads of various styles, flat contacts, a matrix of solder balls (BGAs), or terminations on the

 body of the component.

Printed circuit boardA printed circuit board, or PCB, is used to mechanically support and electrically connect electronic

 components using conductive pathways, or traces, etched from copper sheets laminated onto a non-conductive substrate.

It is also referred to as printed wiring board (PWB) or etched wiring board.A PCB populated with electronic