KEMET鉭電容T491系列——有機聚合鉭電容
KO-CAP是一种采用Ta質陰極和Ta2O5為電介質的鉭電容。但該電容器中由一種具導電性的有機聚合物代替MnO2作為電容的陰極極板。這一改變實現了很低的等效串聯電阻和高頻條件下更高的電容殘留量。KO-CAP電容還具有良好的故障模式，該模式可排除各種標準MnO2鉭型電容會遭遇的點火故障。值得注意的還有，額定電壓≦10伏的元件可在達到額定電壓90％的條件下工作；額定電壓>10伏的元件只能在不超過額定電壓的80％的條件下工作；這些情況下KO-CAP電容的可靠度於在達到50％額定電壓條件下工作的標準鉭電容的可靠度相當甚至更高。
T491系列集合了多層陶瓷電容容量（低等效串聯電阻和高頻電容殘留值，鋁電解電容器（良好的故障模式），和經認可的表面貼裝技術（體積上的有效利用空間、表面貼裝性能及不磨損機械裝置）的最佳特點。KO-CAP電容可減少元件數量，透過取代笨重的含鉛鋁電容來消除通孔裝配（安裝），並針對高成本、大容量陶瓷電容提供一個成本效益更高的解決方案。這些優點使設計者能既節省錢又節省插件板空間。
適用於移動通訊,消費電子,汽車電子等各種電子設備的表面裝貼。
KEMET Organic Capacitor (KO-CAP)
T491 Series Polymer Tantalum
Overview
The KEMET Organic Capacitor (KO-CAP) is a tantalum capacitor with a Ta anode and Ta2O5dielectric. A conductive organic polymer replaces the traditionally used MnO2as the cathode plate of the capacitor. This results in very low ESR and improved capacitance retention at high frequency. The KO-CAP also exhibits a benign failure mode which eliminates the ignition failures that can occur in standard MnO2tantalum types. KO-CAPs may also be operated at steady state voltages up to 90% of rated voltage for part types with rated voltages of ≦10 volts and up to 80% of rated voltage for part types >10 volts with equivalent or better reliability than traditional MnO2tantalum capacitors operated at 50% of rated voltage.
The T491 Series KO-CAP Low ESR Polymer captures the best features of multilayer ceramic capacitors (low ESR, high frequency capacitance retention), aluminum electrolytics (higher capacitance, benign failure mode), and proven solid tantalum technology (volumetric efficiency, surface mount capability, extremely long life). The T491 can reduce component counts, eliminate through-hole assembly by replacing cumbersome leaded aluminum capacitors, and offer a cost-effective and space-saving solution.
