UPW Aluminum Electrolytic Capacitors Nichicon UPW AEC-Q200 Aluminum Electrolytic Capacitors are miniature sized, low impedance, high reliability capacitors for switching power supplies. UPW series capacitors have a smaller case size and lower impedance than the UPM series. The PW series is also RoHS compliant and highly reliable with a lifetime rating of up to 8000 hours. Nichicon UPW series includes models with voltage ranges of 6.3 to 450V, capacitance ranges of 0.047µF to 15,000µF, and capacitance tolerances of ±20% at 120Hz, +20°C.