|ch_07.pdf||Leaded Surface Mount Technology
Traditional through-hole Dual In-Line Package assemblies reached their limits in terms of
improvements in cost, weight, volume, and reliability at approximately 68L. SMT allows
production of more reliable assemblies with higher I/O, increased board density, and reduced
weight, volume, and cost. The weight of printed board assemblies (PBAs) using SMT is reduced
because surface mount components (SMCs) can weigh up to 10 times less than their conventional
counterparts and occupy about one-half to one-third the space on the printed board (PB) surface.
SMT also provides improved shock and vibration resistance due to the lower mass of components.
The smaller lead lengths of surface mount components reduce parasit|