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​KO Conductive Polymer

​The KEMET Organic Capacitor (KO-CAP) is a tantalum capacitor with a Ta anode and Ta2O5 dielectric. A conductive organic polymer replaces the traditionally used MnO2 as 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 MnO2 tantalum types. KO-CAPs may also be operated at 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 MnO2 tantalum capacitors operated at 50% of rated voltage.


​T520 Series KO-CAP Low ESR Polymer

The T520 Series 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 KO-CAP can reduce component counts, eliminate through-hole assembly by replacing cumbersome leaded aluminum capacitors, and offer a cost-effective and space-saving solution.

For more information on the T520 Series, please click here.

T521 Series KO-CAP High Voltage Polymer

The T521 Series is designed for higher application voltages such as 12V, 24V and 28V input rails. This series demonstrates excellent high voltage handling capabilities and reliability and is commonly selected as a replacement for other high capacitance dielectrics such as MnO2 tantalum and aluminum electrolytic capacitors. The T521 Series can be safely operated at 80% of the rated voltages and can withstand transient conditions up to the rated voltage of the component. This series offers higher capacitance for a given application voltage when compared to multilayer ceramic and tantalum MnO2 devices. The T521 Series also offers superior ESR performance over tantalum MnO2 and aluminum electrolytic capacitors and a much lower profile than aluminum polymer and aluminum electrolytic capacitors.

For more information on the T521 Series, please click here.

T525 Series KO-CAP High Temperature 125°C Rated Polymer

The T525 Series is KEMET’s 125ºC rated tantalum polymer capacitor. This part offers the same advantages as the T520 Series such as low ESR, high frequency capacitance retention and a benign failure mode. The T525 Series is often the series of choice when considering automotive or industrial type applications.

For more information on the T525 Series, please click here.

T528 Series KO-CAP Low ESR/ESL Facedown Terminal

The T528 Series combines ultra-low ESR and high capacitance in a new package design that offers the lowest ESL in the market for this type of product. This series offers exceptional performance for high-speed server and microprocessor decoupling —designs that are driving the demand for low inductance chips. The T528 uses a different termination design that allows for a reduction in the inductance loop area and comes in a low profile 1.7mm case height. These product features offer the advantage of improved capacitance retention at frequencies of up to 1 MHz.

For more information on the T528 Series, please click here.

T530 Series KO-CAP Ultra-Low ESR/High Capacitance 125°C Polymer (Multi-Anode)

The T530 Series offers the same advantages as the T520 Series but also has the added advantages of higher capacitance, 125°C performance capability, higher ripple current handling capability and a lower ESR range. Packaged as multiple anodes to reduce the depth that the signal must penetrate, this parallel arrangement reduces the ESR further still to achieve the highest capacitance and lowest ESR of any other type of surface mount capacitor with typical ESR values as low as 4 milliohms. With reduced ESR, the enhanced capacitance retention at higher frequencies provides the lowest total capacitance and most economical solution for high power applications.

For more information on the T530 Series, please click here.