Patent ID: 8320105
Filing Date: 2012-11-27
Classification: H01G

Abstract:
1. An electrolytic capacitor formed by winding band-shaped anode foil and cathode foil, comprising: an anode foil and a cathode foil wound up in a prescribed orientation from one-end side in a longitudinal direction, in a manner opposed to each other; a first anode lead tab terminal connected to a portion of said anode foil at a first distance from said one-end side of said anode foil and arranged at a prescribed first position in a circumferential direction in a wound-up state; a second anode lead tab terminal connected to a portion of said anode foil at a second distance greater than said first distance from said one-end side of said anode foil and arranged at a prescribed second position in a circumferential direction with respect to said first position in the circumferential direction in the wound-up state; a first cathode lead tab terminal connected to a portion of said cathode foil at a third distance from said one-end side of said cathode foil and arranged at a prescribed third position in a circumferential direction with respect to said first position in the circumferential direction and said second position in the circumferential direction in the wound-up state; and a second cathode lead tab terminal connected to a portion of said cathode foil at a fourth distance greater than said third distance from said one-end side of said cathode foil and arranged at a prescribed fourth position in a circumferential direction with respect to said third position in the circumferential direction in the wound-up state, wherein each of said first anode lead tab terminal and said second anode lead tab terminal includes an anode connection portion connected in contact with said anode foil and an anode lead electrically connected to said anode connection portion and serving as an anode terminal, each of said first cathode lead tab terminal and said second cathode lead tab terminal includes a cathode connection portion connected in contact with said cathode foil and a cathode lead electrically connected to said cathode connection portion and serving as a cathode terminal, said second anode lead tab terminal is connected to a portion of said anode foil corresponding to said second position in the circumferential direction after winding up said anode foil by a prescribed length from the portion of said anode foil corresponding to said first position in the circumferential direction, one anode lead tab terminal of said first anode lead tab terminal and said second anode lead tab terminal is provided as a first type formed such that a position in a radial direction of said anode lead is different from a position in a radial direction of said anode connection portion in a state that said anode foil is wound up, the other anode lead tab terminal of said first anode lead tab terminal and said second anode lead tab terminal is provided as a second type formed such that a position in a radial direction of said anode lead is identical to a position in a radial direction of said anode connection portion in a state that said anode foil is wound up, said second cathode lead tab terminal is connected to a portion of said cathode foil corresponding to said fourth position in the circumferential direction after winding up said cathode foil by a prescribed length from the portion of said cathode foil corresponding to said third position in the circumferential direction, one cathode lead tab terminal of said first cathode lead tab terminal and said second cathode lead tab terminal is provided as a third type formed such that a position in a radial direction of said cathode lead is different from a position in a radial direction of said cathode connection portion in a state that said cathode foil is wound up, and the other cathode lead tab terminal of said first cathode lead tab terminal and said second cathode lead tab terminal is provided as a fourth type formed such that a position in a radial direction of said cathode lead is identical to a position in a radial direction of said cathode connection portion in a state that said cathode foil is wound up.