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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Bare card Apply solder paste Place all components Reflow solder De-grease
Inspect and test This is followed by assembly of components, which is manually
done by a vacuum operated pick-up pen. The correct component is picked-up by
T = contact time (measured in seconds) L = contact length (measured in mm) V =
conveyor speed (measured in meters per minute) T (sec) = L (mm)/V (mm/s) = L (
mm) /V (1000 mm ¥ 60/1000 ¥ 60s) = 0.06 ¥ L (mm) /V (m/min) 13.12.4 Reflow ...
... proper soldering will not take place. The measurement of temperature in each
station of the whole reflow soldering line versus the time is called thermal profile.
Each oven as well as each assembly has a unique and specific thermal profile, ...
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1 Basics of Printed Circuit Boards
2 Electronic Components
3 Layout Planning and Design
15 other sections not shown