Advances in materials and manufacturing technology have led to the production of more efficient capacitors with low impedance and ESR. Nichicon’s UCM series offers a low impedance of .06 Ohms at 20°C, 100kHz and the LGU series offers ESR as low as .02 Ohms. Additionally, these capacitors are able to withstand higher ripple current. The advantage of low impedance parts are that they allow a smaller capacitor to withstand higher ripple current without compromising life.