Kyoto, Japan Kyocera Kinseki, a subsidiary of Kyocera Corp., said it has developed the industry's first miniature, and smallest, 4-MHz quartz crystal. The CX3225SB low-frequency quartz crystal, at one twenty-seventh the size of conventional units, provides stable frequency sources for applications that require compact size and power savings such as portable DVDs, handheld game players, PDAs and cellular handsets.
Housed in a 3.2 x 2.5 x 0.55-mm footprint, the new CX3225SB provides a frequency range of 3.5 to 5.0 MHz with a frequency tolerance of ±30 x 10-6(at 25°C). The frequency tolerance over the operating temperature range is +10 to -50 x 10-6 (25°C).
The company says while the product is not as small as some ceramic oscillators, it outperforms these devices in accuracy, stability, frequency tolerance and frequency temperature characteristics at room temperature.
Kyocera Kinseki Engineering Division noted it chose lame-mode oscillation to achieve the device's compact size and low frequency. Lame-mode oscillation, which has yet to find widespread application in the industry, possesses a different oscillation pattern from thickness-shear mode oscillation, which has been the most common approach used to build crystal units, according to the company. "If crystal fragments are made thinner in conventional thickness-shear mode oscillation, the oscillation frequency will increase, so products cannot be made smaller," said Masahiko Goto, Kyocera Kinseki Engineering Division, in a statement.
As one of the key components of digital devices, quartz crystal units can make them smaller and reduce the power consumption of batteries by providing support for low frequencies, said the company. The CX3225SB reduces the power consumption of the overall device by approximately 30% as compared with the company's conventional device.
The CX3225SB complies with the European Union's Restriction of Certain Hazardous Substances (RoHS) directive and is compatible with the reflow profile of lead-free soldering.Click here for more product information.
Samples of the CX3225SB will ship in November with volume production scheduled in April 2006. Sample pricing is US$6.00 each.
Kyocera Kinseki, +81-(0)75-604-3424, www.kinseki.co.jp