The 50YXJ100M8X11.5 is part of the YXJ series of capacitors from Rubycon Corporation. It is a 100uF 50VDC Aluminum Electrolytic Capacitor with Radial leads. It has a tolerance of ±20% and a 7000 hour lifetime. Size is 8mm dia x 11.5mm and temperature of operation is from -40 to 105°C