High-reliability quartz crystals withstand harsh conditions in automotive applications

10-09-2019 | Diodes Inc | Passives

Diodes Incorporated has launched a series of automotive-compliant timekeeping crystals that endure harsh operating conditions to provide outstanding accuracy and reliability in tyre-pressure monitoring systems, infotainment, telematics, and ADAS.

Able to sustain operation at centrifugal forces up to 1500g, the new XRQ crystals pass the SAE J2657 specification for TPMS, now a mandatory safety feature for new cars marketed in regions worldwide. The crystals are resistant to shocks up to 8000g, which is notably higher than the standard (1500g). They also exceed industry-standard JIS-C0044 drop tests by surviving falls of up to 1.2m.

The series is fit for automotive applications, both under-the-hood and in passenger-compartment locations. It is AEC-Q200 qualified and available in Grade 1 (-40C to 125C), Grade 2 (-40C to 105C), and Grade 3 (-40C to 85C) temperature ranges. The devices are PPAP-capable and are manufactured in IATF16949 certified facilities.

Three standard sizes are offered. XR32Q variants in the 3.2mm x 2.5mm outline are provided in frequencies from 12MHz to 66MHz. 2.5mm x 2mm XR25Q devices are provided from 16MHz to 66MHz, and the 2mm x 1.6mm XR20Q from 24MHz to 66MHz. The ceramic surface-mount packages are seam-sealed for hermeticity and mechanical integrity.

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