Stacked solid electrolytic capacitor
A stacked solid electrolytic capacitor has an anode foil composed of a valve metal, a cathode foil having carbon grains that are evaporated or physically adhered to a surface thereof, a separator and a solid electrolytic layer composed of a conducting polymer. The anode foil, the separator and the cathode foil are stacked in order. The solid electrolytic layer is formed between the anode foil and the cathode foil.
1. A stacked solid electrolytic capacitor comprising:
an anode foil composed of a valve metal;
a cathode foil having carbon grains that are evaporated or physically adhered to a surface thereof;
a separator; and
a solid electrolytic layer composed of a conducting polymer,
wherein:
the anode foil, the separator and the cathode foil are stacked in order; and
the solid electrolytic layer is formed between the anode foil and the cathode foil.
2. The stacked solid electrolytic capacitor as claimed in claim 1 , wherein:
an outgoing part is formed as a unit with the anode foil; and
the anode foil and the outgoing part are formed of one sheet of foil.
3. The stacked solid electrolytic capacitor as claimed in claim 1 , wherein:
an outgoing part is formed as a unit with the cathode foil; and
the cathode foil and the outgoing part are formed of a foil.
4. The stacked solid electrolytic capacitor as claimed in claim 3 , wherein:
more than one unit element that is formed of the cathode foil, the separator and the anode foil are stacked; and
the outgoing parts of the cathode foils are connected to each other by welding.
5. The stacked solid electrolytic capacitor as claimed in claim 1 , wherein:
more than one unit element that is formed of the cathode foil, the separator and the anode foil are stacked;
outgoing parts of the cathode foil are connected to each other by welding; and
outgoing parts of the anode foil are connected to each other by welding.