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US 6,310,420 B1Granted
Electronic component in particular an saw component operating with surface acoustic waves and a method for its production
AssigneeSiemens Aktiengesellschaft
InventorsWolfgang Pahl, Alois Stelzl, Hans Krüger
Life of this patent
Estimating the term…
Abstract
The SAW component has electrical structures which are encapsulated and sealed against environmental influences by a cap cover. Connecting pads of the electrical structures are exposed in a window of the cap cover and the pads are provided with a metallization. Solderable metallized areas are formed on the cap cover, and they are connected to the pad metallizations via through-plated holes.
Claims5
An electronic component, comprising:
- a piezoelectric substrate, electrically conductive structures on said substrate and a plastic cap cover sealingly encapsulating said substrate and said structures for protection against environmental influences;
- said plastic cap cover being seated directly on said piezoelectric substrate and having passages;
- in the form of blind holes formed therein, said passages having bottom parts defined by pad metallizations applied directly on said substrate and electrically connected to said structures;
- said plastic cap cover carrying solderable metallizations formed by a material layer sequence of titanium-tungsten, nickel and gold and having through-plated holes through said passages electrically connecting directly said pad metallizations of said structures with said metallizations on said plastic cap cover;
- and
- said metallizations on said plastic cap cover and said through-plated holes being multi-layer metalizations made from the same material and formed together in the same step.
3 more elements
Dependencies are inferred from the claim text.