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Hybrid Combines Ceramic Packaging With Quartz Crystal Precision

A hybrid crystal resonator (HCR) combines the space-saving packaging technology currently used for ceramic resonators with a small quartz crystal element. The packaging technology allows for miniature size and low cost, while maintaining a total tolerance of +/-200 ppm. The XRCGA series is ideal for Serial-ATA interfaces (hard disk drives, memory based drives, and optical disk drives), universal serial bus (USB 2.0) interfaces, and general microcontroller use. Measuring 2.0-mm x 1.60-mm x 0.7-mm, the hybrid crystal resonator provides an initial tolerance of +/-100 ppm with both the frequency shift over temperature and the aging frequency shift at +/- 50ppm. The resonator is also ROHS and Halogen compliant. The XRCGA crystal hybrid resonator series is available in 30-MHz, 33.8688-MHz, 40-MHz and 48-MHz versions for $0.65 (sample quantities). The 25-MHz resonator will be available later this year. Lead times are approximately eight to 10 weeks. MURATA ELECTRONICS NORTH AMERICA, Smyrna, GA. (770) 436-1300.


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