High-reliability solid electrolytic capacitor perform in tough environments

The KEMET organic capacitor (KO-CAP) is now available from TTI Europe. The solid electrolytic capacitor features a conductive polymer cathode capable of delivering very low ESR and improved capacitance retention at high frequencies. KO-CAP combines the low ESR of multilayer ceramic, the high capacitance of aluminium electrolytic and the volumetric efficiency of tantalum into a single surface mount package. Unlike liquid electrolyte-based capacitors, the KO-CAP capacitor has a very long operational life and high ripple current capabilities. The T541 Commercial-Off-The-Shelf (COTS) grade polymer electrolytic offers the same performance advantages as other KO-CAP series with screening options associated with high reliability (Hi-Rel) applications. The components are built with a tin-lead (SnPb) termination finish and offer several surge current screening options. The multiple-anode design of the T541 offers lower ESR options than the T540, resulting in high ripple current capability and higher frequency capacitance retention. The recommended application derating for the capacitors is 10 - 20%, rendering them suitable for application voltages from 2.25VDC to 50VDC. Typical applications include decoupling and filtering in defence and aerospace applications that require low ESR or a benign failure mode, says the company.