A solid electrolytic capacitor includes a valve metal sheet having a porous portion
on one side of the sheet, a dielectric layer formed on the porous portion, a solid
electrolyte layer formed on the dielectric layer, a collector layer formed on the
solid electrolyte layer, a through-hole electrode connected to the collector layer
and penetrating the valve metal sheet to be exposed to the other side of the sheet,
and an electrode terminal insulated from the through-hole electrode and connected
to the valve metal sheet. The capacitor further includes an insulating portion
penetrating the valve metal sheet and a penetration electrode penetrating the insulating
portion. The solid electrolytic capacitor has a large capacitance and an excellent
radio frequency response, and can be easily mounted on a semiconductor device.
