Extended temperature range of crystals meet the demands of new product designs
Components able to withstand high operating temperatures are growing in demand, and it is not only by engineers working on conventional high temperature or extreme applications, for example, downhole. This trend is par driven by IC manufacturers, who often design one chipset suitable for industrial and automotive applications, and by the increased use of electronic devices in more extreme environments. Also, the internal self-heating of electronic components close to the crystal on the board can motivate selecting a crystal guaranteed to operate within the specification of up to 125C.
Customers using the same frequencies in multiple projects with different temperature requirements may also benefit from selecting one extended temperature part designed to work within all these applications rather than having to source and stock numerous parts.
IQD Frequency Products is, therefore, introducing a range of crystals housed in the popular four-pad SMD ceramic packages 3.2mm x 2.5mm (CFPX-180) and 2mm x 1.6mm (IQXC-42) with the extended operating temperature range of -40C to 125C. The CFPX-180 is available in frequencies from 12MHz and the IQXC-42 from 16MHz, with various load capacitances. The parts have frequency stabilities down to +-30ppm over -40C to 125C. The ESR values are specified slightly lower than for the existing range of crystals to meet the demands of new microcontrollers, which often need lower ESR, for example, for IoT applications. For engineers needing AEC-Q200 qualification, the company also provides a range of automotive-qualified crystals.
These parts are recommended for many applications, including IoT and IIoT, e.g., Ethernet, green and smart energy applications (solar inverters), industrial control systems, RFID, test and measurement systems, telemetry systems, transportation systems, and WiFi modules.
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