RL8 FPCAP Aluminum Electrolytic Capacitors Nichicon RL8 FPCAP Aluminum Electrolytic Capacitors use a functional polymer cathode that greatly improves frequency and temperature characteristics. Nichicon RL8 Capacitors offer ultra-low ESR and large capacitance up to 1500µF. These low-profile, radial lead caps have operating temperature range from -55°C to +105°C.