Sega Naomi Super Capacitor 0.1F 5.5V (100mF / 100,000uf / 100000uf) coin cell horizontal mount 11.5mm diameter, 10mm lead spacing and 5.2mm height. This supercap is located a C29 on the arcade game PCB. This capacitor is a common suspect with all broken Naomi PCBs as it is prone to leaking and damaging the traces to the serial EEPROM. Used for memory backup on various gaming systems and computers. Direct replacement for the leak prone Memory Capacitor on the Sega NAOMI arcade game systems. If you own a Naomi board (not sure if it applies to the Naomi 2 PCBs) then you should check the condition of this cap and replace it (MC1067).
Tim Virio (verified owner) –
Used this to replace the Super Cap on my Naomi MOBO, this one was a perfect replacement, worked great.