en.Wedoany.com Reported - Kyocera AVX has added high-temperature automotive-grade multilayer varistors for 48V power systems to its TransGuard VT series. The device utilizes zinc oxide ceramic semiconductor technology, providing bidirectional overvoltage protection and EMI/RFI attenuation in a surface-mount package, which can reduce the use of discrete MLCCs, lower BOM costs, and save board-level space.

These 48V multilayer varistors support an operating temperature range of -55°C to +175°C without derating and comply with AEC-Q200, IEC 61000-4-2, and ISO 10605 standards. They can handle high current, high energy, and repetitive surge events, featuring a Class 6 Human Body Model ESD rating (withstanding over 25,000V) and an MSL 1 moisture sensitivity level, requiring no special handling prior to reflow soldering.

The new 48V system VT series MLVs are specifically designed for 48V-powered vehicles, with a rated operating temperature of 150°C, compliant with the VDA-320 standard. They are available in five EIA sizes (0805 to 2220), with a rated voltage of 56VDC/40VAC, clamping voltage of 100-110V, transient current of 30-1,500A, transient energy of 0.2-9J, and capacitance of 80-2,800pF. Target applications include electric vehicles such as e-bikes, e-scooters, golf carts, and passenger cars, as well as charging stations.

Select part numbers are available with FLEXITERM termination, capable of withstanding vibration, 5mm board bending, and 3,000 temperature cycles. All devices are RoHS compliant, feature matte tin-plated terminations (with a nickel barrier layer), and are supplied in tape and reel packaging (1,000/4,000/10,000 pieces).

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