Long useful life, 2000 h at up to 150 °C Low ESR also at 63 V DC High ripple current capability High vibration resistance Shelf life up to 15 years at storage temperatures up to 40 °C. To ensure solderability, the capacitors should be built into the application within one year of delivery. After a total of two years' storage, the operating voltage must be applied for one hour to ensure the specified leakage current. Construction Charge/discharge-proof, polar Aluminum case with insulating sleeve.