Kemet has introduced the High Temperature Surface Mount C0G multilayer ceramic capacitors (MLCCs). These feature a robust and proprietary base metal dielectric system that offers excellent performance relative to capacitance and case size, combined with capacitance stability at temperatures up to +200C. The new devices have extremely low ESR and ESL and high ripple-current capability.The platform promotes downsizing opportunities of existing High Temperature C0G technology and offers replacement opportunities for existing X7R/BX/BR technologies. Typical applications include critical timing, tuning, circuits requiring low loss, circuits with pulse, high current, decoupling, by-pass, filtering, transient voltage suppression, blocking and energy storage. It is suitable for use in extreme environments present in applications such as down-hole exploration, aerospace engine compartments and geophysical probes.
Standard capacitance ratings for the non-polar devices range from 0.5pF up to 0.22uF, in capacitance tolerance offerings of +/-0.25pF, +/-0.5pF, +/- one per cent, +/- two per cent, +/- five per cent, +/-10 per cent or +/-20 per cent. The temperature coefficient of capacitance (TCC) is +/-30ppm/C from -55C to +200C. Devices are available in DC voltage ratings of 10, 16, 25, 50 and 100V, with a maximum dissipation factor of 0.1 per cent. Seven standard EIA case-size options are available, including 0603, 0805, 1206, 1210 and 1812, with either nickel barrier/tin or Sn/Pb terminations.
