Abstract: A solid state electrolytic capacitor and a structurally improved lead frame used in such a capacitor are disclosed. In the solid state electrolytic capacitor of this invention, the positive terminal parts of a lead frame assembled with each laminated capacitor unit are primarily bent upward to extend along the front surface of the positive portion of the capacitor unit and are secondarily bent rearward to come into contact with the upper surface of the positive portion, thus forming positive terminals of the capacitor unit. The contact parts of the lead frame extend outward from both sides of the capacitor unit and are brought into contact with those of lead frames assembled with the other capacitor units. The positive portion of each capacitor unit has the same width as that of the other part of the capacitor unit, thus removing stepped corners from the junction of the positive portion and the other part of the capacitor unit.