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For Solder Paste Printing
Found 2 free book(s)
Stencil Design Guidelines for Electronics Assembly ...
smtnet.comThe stencil applied for depositing the solder paste is a thin, 75–200 µm thick metal foil, on which apertures are formed according to the solder pads on the printed circuit board. Stencil printing provides a fast, mass solder paste deposition process; relatively expensive, appropriate and recommended for mass production.
SMT Board Assembly Process Guide - Intel
www.intel.comSolder Paste Printing Although there are a number of lead free (Pb-free) alloys, the most commonly used compositions contain tin, silver, and copper, commonly expressed as SAC, for SnAgCu. Within SAC solders, by far the most common usage is Sn/3Ag/0.5Cu, a near-eutectic which melts between