Kyocera (News - Alert) Corporation, a global supplier of electronic components, telecommunications equipment, semiconductor packages, solar power generating systems, printers, copiers, cutting tools and industrial ceramics, announced it produced crystal unit with a thermistor, a temperature sensing component.

In March, Kyocera started providing samples of this product named "CT2520DB". It is an AT cut type crystal unit with a size of 2.5 x 2.0mm.

Crystal devices are used in mobile phones to produce the reference signal for stable communication. In these systems, temperature compensation of the crystal unit is important to minimize frequency change under a wide operating temperature range.

Crystal units are used in many designs replacing TCXOs. Temperature sensors are required to be placed as close as possible to the crystal unit for high precision temperature compensation, according to company officials.

CT2520DB is a crystal unit with a temperature sensor to realize high precision temperature compensation which is required in the trend of replacement of the TCXO with a crystal unit, especially in handsets using Qualcomm's (News - Alert) chipsets.

The frequency is 19.2MHz, and the operating temperature ranges from  -30 degrees Celsius to +105 degrees Celsius, which fits the specifications for wireless communication.

To compensate frequency change caused by thermal transients, the thermistor is placed as close as possible to the crystal unit. They are located close together and delay of temperature change between the crystal unit and thermistor is minimized by placing these components on each side of a ceramic package.

Recently, Kyocera announced the completion of two solar electric systems in partnership with SolarCity (News - Alert) at Phoenix area schools: Copper Ridge in Scottsdale and Cholla Elementary in Casa Grande.

Featuring Kyocera solar modules, the two photovoltaic systems have a combined size of more than 764 kilowatts (kW) - enough to offset more than 33 million pounds of carbon dioxide.