Epson Toyocom announced the commercial development of two new models of highly accurate, miniature, high-frequency fundamental mode (HFF) crystal oscillators for high-frequency applications in optical transmission devices, cellular base stations, WiMAX base stations and other core network equipment. The new HFF crystal oscillators, the VG-4511CA and the SG-771PCD series, will

enter volume production in April 2008.

The new HFF crystal oscillators were made compact 7.0 x 5.0 x 1.6t mm by adopting a single-sealed structure instead of the conventional double-sealed structure. Meanwhile, ageing characteristics were improved by using wire bonding to bond the crystal chip and package.

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