Murata Electronics North America recently introduced the world’s smallest boundary elastic surface acoustic wave (BEL SAW) filter, measuring 0.8 x 0.6 x .365 mm. This represents a 75% decrease in volume and a 66% reduction in area compared to other filters, making it ideal for the mobile phone market. By adopting the boundary acoustic wave (BAW) as the reproducing wave, Murata’s advanced planar-type component does not need a cavity and achieves the same high tolerance capabilities as traditional filters while guarantying the identical thermal shock tolerance of semiconductors. In addition, Murata’s new SAFAM series utilizes ball grid array (BGA) terminations for mounting on integrated circuits (ICs), while current filters can only offer mounting on the printed circuit board, outside the semiconductor.
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