the sealing member 5 alternatively as shown in fig1 through 20 instead of mounting the capacitor elements 2 on the lead plates 3 and 4 the lead plates 3 and 4 may be arranged to intersect perpendicularly to each other only at the upper portions of the capacitor elements 2 or at the area of the sealing member and any number such as two three four five six of the capacitor elements 2 may be connected to the lead plates 3 and 4 referring to fig2 the lead plate 4 is provided with a bend 19 at its intermediate area with the bend 19 perpendicular to the lead plate 3 while the other portion of the lead plate 4 is in parallel with the lead plate 3 to allow mounting of two capacitor elements 2 lugs 20 to which the anode internal leads 7 of the capacitor elements 2 are connected are formed at opposite lower ends of the lead plate 3 while lugs 21 to which the cathode internal lead 9 of the capacitor elements 2 are formed at opposite upper ends of the lead plate 4 in this manner large size of capacitor elements 2 may be used to form a small size electrolytic capacitor and the manufacture of the capacitor elements 2 is facilitated the anode foil 8 and the cathode foil 10 are made of high purity aluminum and the anode foil 8 is formed at a predetermined voltage to form an oxide.