MLCC offers very high capacitance stability

December 01, 2016 // By Christoph Hammerschmidt
TDK has expanded its lineup of automotive-grade soft-termination and MEGACAP Type muli-layer ceramic capacitors (MLCCs) with new C0G types. The new MLCCs feature high capacitance stability at a high DC bias. The capacitance drift is only 0.3 percent over the entire temperature range from -55 ºC to +125 ºC. This makes the new Class 1 MLCCs especially well-suited for the high-precision resonant circuits for automotive wireless charging and in LLC resonant circuits of onboard chargers for plug-in hybrid and electric vehicles.

Until now, these robust MLCC designs, which offer protection against board flexure and solder cracks, have been available with X5R, X7R and X8R dielectric materials. The new types combine the low relative permittivity of the C0G dielectric with rated capacitance values up to 300 nF and enable MLCCs to be used in a greater range of applications where reliability is required.

The new types are qualified to AEC-Q200. In addition to the expanded range of automotive applications, the new C0G MLCCs are also suitable for use in circuits requiring high reliability or as replacements for other types of capacitors. Their rated voltages range from 50 V to 3000 V.

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