AVX Corp. has developed porcelain and ceramic dielectric multilayer capacitor (MLC) chips with a new internal construction that allows for as much as 40% lower equivalent series resistance (ESR) than previous versions. Designated the SQ series, the chips are suitable for RF/microwave applications ranging from 10 MHz to 4.2 GHz.

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The new design has a fine-grained, high-density, high-purity dielectric material to keep out moisture and includes heavy internal palladium electrodes, according to AVX. This makes the SQ series suitable for applications with high current-carrying capabilities and high-quality factors. Such applications include amplifiers, mixers, oscillators, low noise amplifiers (LNAs), and filter networks as well as medical devices such as MRI coils.

Available in 1210 and 0605 sizes with voltages up to 500 Vdc, the SQ series offers high stability under the stresses of changing voltage, frequency, time and temperature. Pricing for the SQ series ranges from $0.10 to $0.75 in large quantities. Delivery is stock to six weeks.