Patent ID: 8441799

Claim:
An electronic component mounted on a circuit board including electrodes thereon, the electronic component comprising: an electronic element including electrodes; and a housing case for housing the electronic element in a hollow portion defined inside the housing case, the housing including via electrodes electrically connected to the electrodes of the electronic element, the via electrodes extending from an inside of the housing case to an outside of the housing case, and outer electrodes electrically connected to the via electrodes and attached to the circuit board by a metallic solder, the outer electrodes on a bottom surface of the housing case, wherein the outer electrodes comprise: a first metal layer on the bottom surface of the housing case and connected to the electrodes on the circuit board by the metallic solder; a second metal layer on a surface of the first metal layer and comprising a solder-soluble metal; and a third metal layer on a surface of the second metal layer and comprising non-solder-soluble metal in which mobile portions of the third metal are entrained in the metallic solder and increase the shear strength of the connection between the outer electrodes and the electrodes on the circuit board.