Non-Polarized Electrolytic Capacitors ERSE's 3%DF line of Non-Polar Electrolytic Capacitors are made from high quality smooth foil. The smooth un etched foil allows for higher ripple currents and lower dissipation factors allowing for more sonice accuracy and detail. ERSE's 3% DF Non-Polar Electrolytic Capacitors are an excellent choice for speaker crossover building and feature a low 5% tolerance. The 3% DF Non-Polar caps are perfect for crossover networks of bandpass,low pass and high pass systems. ERSE's 3% DF NPE caps have excellent frequency characteristics and are very linear verses frequency. The 3% df caps will exhibit better acoustic properties than the 3% df line and handle larger amounts of power due to it's lower ripple current.