GT-cut quartz crystals are smaller, more stable for lower-MHz frequencies

March 05, 2014 // By Graham Prophet
Providing a low-power, high-precision, compact, and low-profile unit, River Eltec, (Japan) has developed an ultra-compact, lower MHz frequency quartz crystal unit. It offers the frequency-temperature characteristics of GT-cut quartz crystal in a smaller package (1.6 × 1.2 × 0.33 mm) for applications at frequencies ranging from 8 to 20 MHz.

The company has specialised in 10-MHz range GT-cut components and precision photolithography. Originally developed in the 1940s as components offering outstanding frequency-temperature characteristics, GT-cut quartz crystal units have posed challenges in blank fabrication, limiting volume production. AT-cut quartz crystals have seen a shift toward support for higher frequencies to respond to a trend of smaller packages, creating a need for smaller, low-power units operating at lower MHz frequencies.