KWB Aluminum Electrolytic Capacitors Chemi-Con KWB Aluminum Electrolytic Capacitors are well-suited for low-profile power supplies. These devices offer 5000 hours of endurance at +105°C with ripple current. KWB capacitors provide up to 150µF nominal capacitance and feature a 400V to 450V rated voltage range. These devices are a miniaturized version of the KWA series. Chemi-Con KWB Aluminum Electrolytic Capacitors are a non-solvent-resistant type and meet RoHS 2 requirements.