Mundorf Bipolar Audio ECAP
Mundorf Bipolar Electrolytic capacitors are perfect for where film capacitors would be too large or cost considerations come into account. They are also used for series resonant / Zobel circuits and impedance linearisation. For these bipolar electrolytic capacitors, a distinction is made between two construction types, "rough" and "smooth". In the rough versions the foil is etched in order to increase the surface area of the foil. Since the capacitance of a capacitor is proportional to the surface area, larger capacitances can be achieved in this way with the same material costs. The construction size of "rough" electrolytic capacitors, therefore is in effect smaller. Thus capacitances of up to 800µF are available in the BR63 series. The higher electrical strength of the "rough" etched model allows it to also be used where "smooth" electrolytic capacitors are not electrically strong enough and expensive foil capacitors are not an option. The "smooth" versions generally are used for the smaller values.