UCP High-Voltage Aluminum Electrolytic Capacitors Nichicon UCP High-Voltage Aluminum Electrolytic Capacitors are high voltage, miniature size, long life capacitors that have a high ripple current and a load life of 10,000 hours at +105°C. These electrolytic capacitors are compliant to the RoHS directive, 400V to 450V voltage range, and ±20% capacitance tolerance.