FOR SALE: 516 uF at 400V DC Electrolytic Capacitors. New USA MADE - Cornell Dubilier Radial Mount Capacitors. 516uF +/-20% with temperature rating for -40C to 105C. Dimensions: 35 mm Diameter X 70 mm Height - 1.375" diameter X 2.75" tall. Ten of these in series will give you 52 uF at 4000V DC. Available for $5.00 each plus shipping.