Industry use Printed Circuit Board | Durable Keypads for Any Environment - Manufacturer Direct | YiYi Enterprise Co., Ltd

The first PCBs used through-hole technology, mounting electronic components by leads inserted through holes on one side of the board and soldered onto copper traces on the other side. Boards may be single-sided, with an unplated component side, or more compact double-sided boards, with components soldered on both sides. Horizontal installation of through-hole parts with two axial leads (such as resistors, capacitors, and diodes) is done by bending the leads 90 degrees in the same direction, inserting the part in the board (often bending leads located on the back of the board in opposite directions to improve the part's mechanical strength), soldering the leads, and trimming off the ends. Leads may be soldered either manually or by a wave soldering machine. YI YI is high-quality Industry use Printed Circuit Board, Sigle sided printed circuit board, PCB , RF pcb, Rigid PCB, Multilayer PCB manufacturer from Taiwan since 1974. With 50 years experience for producing Membrane Switch and FPC. 80% exportation to US, Europe, Australia, New Zealand, and Russia. The main products are membrane keyboard switches, flexible printed circuits, rigid-flex boards, EL panels, and silicon rubber keypads and name plates.