Matsushita Electric Industrial Co., Ltd.

Yasuhiro Izumi

Satoshi Sato

Hiromitsu Taki

Takehiko Yoneda

Takuya Fujimaru

Yoshihiro Kiyomura

Yasunori Tabaru

Ryoichi Makimoto

Yoshito Yoneda

In an electronic component, an element section is formed on a base, and the element section has functions of at least one of inductance, resistor, and capacitor. Resist film is formed on at least the lateral faces of the base. An unnecessary part of patterned resist film is removed, and a protective member is formed on that removed place. Then remaining resist film is removed. This manufacturing method can provide the electronic component excellent in bonding strength between the protective member and the base.

Electronic component and method of manufacturing the same

A dielectric resonator comprising a cylindrical substrate comprised of a dielectric ceramic, a first conductive film comprised of copper, formed on the inner surface, outer surface and one end of said cylindrical substrate, and a second conductive film comprised of at least one solder and tin, formed on said first conductive film. Thus the dielectric resonator of the present invention can be free from oxidation of the copper film when heating is carried out not in an inert gas environment but in the atmosphere. Hence it becomes unnecessary to use various devices for carrying out the heating in an inert gas environment as so required in the conventional cases. This also enables reduction of the number of processing steps, resulting in an improvement in productivity. Moreover, its weatherability can be improved, so that it can promise a long lifetime.

Dielectric resonator and process for manufacturing the same

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Miyazaki, Japan

Yasuhiro Izumi