Kyocera AVX has announced that several of its VCAS Series multilayer varistors (MLVs) are now qualified to both the VW80808 and AEC-Q200 standards. The VCAS Series MLVs, introduced in October of 2022, were the industry’s first MLVs with automotive-grade flexible terminations, and are now the first flexible-termination varistors to be qualified to both AEC-Q200 and VW80808 standards.
The VW80808 standard targets the protection of automotive electrical systems from shorts involving the battery. The qualification is based on 5-mm board bend testing, power line testing (60,000 pulses at -55°C, 25°C and 125°C) and temperature cycling testing.
(Source: Kyocera AVX)
The VCAS Series MLVs with FLEXITERM terminations can withstand severe flection, vibration and temperature cycling, said the company. They can tolerate up to 5 mm of mechanical board flexure and up to 3,000 temperature cycles up to 150°C, which exceeds the AEC-Q200 testing requirement of 1,000 cycles at up to 125°.
Test results showed that the VCAS Series MLVs exhibited zero board flex failures, including internal cracks and depanelization, and no significant changes to their electrical characteristics, even when subjected to 200% more temperature cycles at 20% higher temperatures than those mandated for AEC-Q200 qualification, Kyocera AVX said.
The VW80808 qualification ensures that these devices can operate in an extended range of demanding high-reliability applications in the automotive industry. They can also be used in industrial, aerospace, downhole drilling, IoT and consumer electronics applications.
Key specs include clamping voltages from 14–165 V, transient energies from 0.1 up to 4.5 J and working voltages ranging from 3.3–85 V. The operating temperature range is -55°C to 150°C.
The RoHS-compliant devices are available in four surface-mount case sizes: 0603, 0805, 1206 and 1210. Lead time is currently 10 weeks. They can be ordered at Digi-Key Electronics and Mouser Electronics websites.
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