The components are mounted on a quartz substrate in hermetically sealed packages and have a footprint of 3 x 3 mm². The permissible operating temperature ranges from -45°C to +125°C.
The first types of the R990 (433.92 MHz) and R991 (315 MHz) series are available for precision wireless transmitters in automotive electronics applications such as remote door locking and unlocking, and tire pressure monitoring, as well as for other applications in the ISM bands. These resonators allow transmitters to be configured with very narrow bands, increasing receiver sensitivity and reducing susceptibility to interference. This also enables long transmission ranges. These new resonators meet the requirements of AEC-Q200.