Patent ID: 8257463

Claim:
An electrolytic capacitor comprising an anode that is formed from a tantalum powder that is milled and thereafter compressed into the shape of the anode, the milled powder containing flakes having a bulk density of from about 0.2 to 0.6 grams per cubic centimeter, a specific surface area of from about 0.5 to about 10 meters squared per gram, and an aspect ratio of from about 2 to about 400, wherein a wire having a longitudinal axis is embedded within the powder and the flakes are generally oriented in a direction of the longitudinal axis of the wire and disposed in close contact therewith, and wherein the electrolytic capacitor exhibits an equivalent series resistance (“ESR”) of less than about 300 milliohms, measured with a 2-volt bias and 1-volt signal at a frequency of 2 MHz.