Printed Circuit Boards: Design, Fabrication, and Assembly
McGraw Hill Professional, 2005 M09 7 - 704 pages
The printed circuit is the basic building block of the electronics hardware industry. This is a comprehensive single volume self-teaching guide to the art of printed circuit board design and fabrication -- covering the complete cycle of PCB creation, design, layout, fabrication, assembly, and testing.
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The process is carried out by the following steps: a The mixed silver solution
which is a mixture of silver nitrate, distilled water, ammonia and sodium
hydroxide is sprayed through nozzles on the sensitized surfaces a The reduction
9.1.1 Ferric Chloride Ferric chloride etching solutions are widely used in the 'print'
and 'etch' process in the PCB industry. Ferric chloride has a high etch rate and
high copper dissolving capacity. It is used with screen inks, photo-resist (wet film
a Ammonium chloride 100 to 110 g/l a pH 7.8 to 8.2 a Temperature 45 to 55 °C a
Specific gravity 1.2 at 20 °C a Copper content 150 to 160 g/l Process Control and
Regeneration Etching solutions are operated between 50-55 °C and are well ...
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1 Basics of Printed Circuit Boards
2 Electronic Components
3 Layout Planning and Design
15 other sections not shown