TPC/Hilton Capacitor, 21421 N. 14th Avenue
Phoenix, AZ 85027
(623) 582-5555    fax: (623) 582-2278

The Typical DCL Curve

The amount of current leakage (DCL) across the dielectric of a tantalum capacitor is a function of time, as shown in the graph below. The high initial current decays rapidly to a comparatively low value. The DCL after 5 minutes is still slightly higher than the ultimate DCL. The DCL in a wet tantalum capacitor will continue to improve over its life. The DCL ratings for all wet tantalum capacitors are measured after 5 minutes of applied voltage (WVDC).

The Effect of Voltage and Temperature
on DCL

DCL is affected by temperature and by applied voltage. The ratings given by manufacturers are for operation at 25°C and full rated working voltage. Increasing either the temperature or the applied voltage increases the DCL. Note that the relationship between applied voltage and DCL is non-linear - half the voltage yields less than half the DCL.

The information contained herein is believed to be correct, but no guarantee or warranty with respect to accuracy, completeness or results is implied and no liability is assumed. Nothing herein is to be construed as advertising or authorizing practice of any invention covered by patents without license from the owners thereof. In the interest of improved design & performance, TPC/Hilton Capacitor reserves the right to make changes in any specification, data or material contained herein.