Printed Circuit Board

In: Computers and Technology

Submitted By blaine
Words 2750
Pages 11
Printed circuit board
From Wikipedia, the free encyclopedia (Redirected from Circuit board)
Jump to: navigation, search Part of a 1983 Sinclair ZX Spectrum computer board; a populated PCB, showing the conductive traces, vias (the through-hole paths to the other surface), and some mounted electrical components
PCB Layout ProgramA 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. Alternative names are printed wiring board (PWB),and etched wiring board. A PCB populated with electronic components is a printed circuit assembly (PCA), also known as a printed circuit board assembly (PCBA).

PCBs are rugged, inexpensive, and can be highly reliable. They require much more layout effort and higher initial cost than either wire-wrapped or point-to-point constructed circuits, but are much cheaper and faster for high-volume production. Much of the electronics industry's PCB design, assembly, and quality control needs are set by standards that are published by the IPC organization.

Contents [hide]
1 Manufacturing
1.1 Patterning (etching)
1.2 Lamination
1.3 Drilling
1.4 Exposed conductor plating and coating
1.5 Solder resist
1.6 Screen printing
1.7 Test
1.8 Populating
1.9 Printed Circuit Assembly
1.10 Protection and packaging
2 Safety Certification (US)
3 "Cordwood" construction
4 Multiwire boards
5 Surface-mount technology
6 See also
7 References
8 External links
8.1 Design guidelines
8.2 Standards and Specifications
8.3 Do It Yourself (DIY) guides
8.4 Others

[edit] Manufacturing A PCB as a design on a computer (left) and realized as a board assembly with populated components (right). The board is double sided, with through-hole plating, green…...

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