by Mat Dirjish
KYOCERA AVX is expanding its TransGuard VT Series of high-temperature, automotive-grade multilayer varistors (MLVs) to include components for use in 48V power supply systems. As per the company, its MLVs provide reliable, cost-effective protection from electrical transients in automotive, industrial, and transportation applications, including electric passenger and commercial vehicles, e-bikes, e-scooters, golf carts, and their charging stations.
TransGuard VT Series MLVs are zinc oxide (ZnO) ceramic semiconductor devices that provide bidirectional overvoltage protection and EMI/RFI attenuation in compact surface-mount packages. They support operating temperatures extending from -55°C to +175°C with zero derating across the entire range and are qualified to AEC-Q200, IEC 61000-4-2, and ISO 10605.
The new System VT Series MLVs for use in motor vehicles with 48V power supplies operate in temperatures up to 150°C and are additionally qualified to VDA-320. They are available in five EIA chip sizes (0805, 1206, 1210, 1812, and 2220) and specify operating voltages of 56 VDC or 40 VAC working, 100V to110V clamping, and 48V jump start. Current handling spans 30A to1,500A with the ability handle 0.2J to 9J transients.
Other features common to all TransGuard VT Series MLVs include RoHS-compliant, matte-tin-plated terminations with nickel barriers and tape and reel packaging with 1,000, 4,000, or 10,000 parts. For more details, peruse the TransGuard VT Series and the new 48Vsystem VT Series overviews.
Mat Dirjish Online 