printed circuit board PCB that shorthand , the Chinese name for the printed circuit board , also known as printed circuit boards, printed circuit boards, electronic components is important is the support of electronic components, a provider of electronic components electrical connections. Since it is produced using electronic printing , so called " print" circuit board.
PCB 's history
The inventor of the printed circuit board is Austrian Paul Ai Sile (Paul Eisler), he was in 1936 in a radio device uses a printed circuit board. In 1943, a large number of Americans using the technology in the military radio. In 1948, the United States formally recognized the invention for commercial purposes. Since the mid- 1950s onwards, printed circuit board technology began to be widely used.
Appeared before the printed circuit board , the interconnection between electronic components rely on wires connected directly to achieve. And now, just as an effective circuit breadboard experimental tools exist ; printed circuit boards in the electronics industry has occupied the position of absolute rule.
PCB Design
Printed circuit board design is based on the schematics , circuit designers to achieve the required functionality . Printed circuit board layout design mainly refers to the need to consider a variety of factors external connector layout , optimizing the layout of the internal electronic components, optimize the layout of metal wires and vias , electromagnetic protection , thermal dissipation . Excellent layout can reduce production costs , to achieve good performance of the circuit and thermal performance . Simple layout can be achieved by hand , complex layout needs the computer-aided design (CAD) implementation.
PCB classification
According to the circuit layers Category: divided into single- sided, double sided and multilayer boards . Common multilayer laminates usually 4 or 6 laminates, complex multilayer up to ten layers.
According Flex classification : divided into ordinary circuit board and flexible circuit boards.
