Diodes Incorporated has released a series of automotive-compliant timekeeping crystals. The XRQ series of crystals can withstand harsh operating conditions to ensure outstanding accuracy and reliability in tire-pressure monitoring systems (TPMS), infotainment, telematics, and advanced driver assistance systems (ADAS).
Capable of sustained operation at centrifugal forces up to 1500g, the new XRQ crystals pass the Society of Automotive Engineers (SAE) J2657 specification for TPMS, now a mandatory safety feature for new cars marketed in territories worldwide. The crystals are resistant to shocks up to 8000 gms, significantly higher than the standard (1500 gms). They also surpass industry-standard JIS-C0044 drop tests by surviving falls of up to 1.2 meters.
The crystals meet the requirements of ultrasonic welding manufacturing processes, which are cleaner than traditional processes and used when manufacturing hermetically sealed objects, such as a TPMS. The process can be used to produce automotive components that must provide superior precision and reliability.
The crystal Series is suitable for automotive applications, both under-the-hood and in passenger-compartment locations. It is AEC-Q200 qualified and available in Grade 1 (-40°C to 125°C), Grade 2 (-40°C to 105°C), and Grade 3 (-40°C to 85°C) temperature ranges. XRQ devices are PPAP capable and are manufactured in IATF16949 certified facilities.
Three standard sizes are available. XR32Q variants in the 3.2mm × 2.5mm outline are available in frequencies from 12 MHz to 66 MHz. 2.5mm × 2.0mm. XR25Q devices are available from 16 MHz to 66 MHz, and the 2.0mm × 1.6mm. XR20Q from 24 MHz to 66 MHz. The ceramic surface-mount packages are seam-sealed for hermeticity and mechanical integrity.
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