Decouplers Offer Low Inductance

Said to offer the lowest inductance of any FR4 mountable device in the industry, 0508 Inter-Digitated Capacitors (IDCs) have a measured inductance of 110 pH. They are available with values up to 1 mF. The 0508 IDC connects with eight vias to power and ground planes to provide a solution for high-speed decoupling needed for microprocessors. The IDC works by connecting the single capacitor with a series of eight vias to the power and ground planes in an alternating (interdigitated) pattern. The proprietary internal construction geometry alternates the polarity of these elements to allow alternating inductance values that cancel one another.