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A printed circuit board also known as PCB is a support that mechanically and electrically connects the different components using conductive tracks, or traces, etched from copper sheets which are in turn laminated onto a non-conductive strata. A Printed circuit board is also known as printed wiring board, PWB or etched wiring board sometimes. Some of the electric components found on a printed circuit board include a printed circuit assembly which is also known as a printed circuit board assembly. Though a printed circuit board is highly reliable it is way too inexpensive and can be easily assembled.

The only effort needed is in the initial layout effort and after that the wire wrapping and point-to-point constructed circuits are very easy to do. For a high volume production these are faster and economically cheaper and viable. IPC organization sets the design, assembly, and quality control needs of a printed circuit board and these standards have to be met ant any cost.

The conducting layers of a printed circuit board are made of copper foil which is essentially thin. Then the insulating layer are laminated with epoxy resin prepare. The dielectrics can be made of different substances according to the insulating property. A printed circuit board is usually coated with a solder mask that is green in color. There are some boards available in blue and red also. Thermal expansion is a significant consideration with naked die technologies, and the best dimensional stability is provided by the glass fiber. Typical density of a raw printed circuit board is 2.15g / cm3.

http://www.smps.us/pcb-design.html

This websites provides a detailed knowledge of the processes involved in the manufacturing of a Printed circuit board. The website has board layouts, software, assembly info and tutorials on manufacturing of a Printed circuit board.

http://www.pragoboard.cz/english/index_english.htm

This website mainly deals with the manufacturing and production of printed circuit boards in large scale. Apart from detailed information about the company it also has details about the manufacturing and marketing of the printed circuit boards by the company. The side bar providing details about tips and tricks of the production and selection of a printed circuit board is an additional feature to help the users.

• http://expresspcb.com/ExpressPCBHtm/SpecsProduction.htm

The above mentioned site has a specialization in the manufacturing of printed circuit boards. The specifications involved in the manufacturing of a printed circuit board, the various options available in manufacturing and detailed procedure are all provided in detail in the website. The Production procedure detailed is for the design of 2-layer PCBs that include the silkscreen and solder mask layers.

http://www.goldphoenixpcb.biz/products.php

This is a special website which specializes in manufacturing of Printed circuit boards in China. The website lists different types of printed circuit boards manufactured in house that includes gold plating PCB, immersion Gold PCB, PCB with heavy copper, PCB with impedance control, PCB for high frequency, hot air leaving PCB, Ultra-thin PCB, PCB with gold finger, PCB with blind and buried holes, aluminum based PCB, ultra-thick PCB, PCB for power supply etc.