The 50YXJ1000M16X25 is part of the YXJ series of capacitors from Rubycon Corporation. It is a 1000uF 50VDC Aluminum Electrolytic Capacitor with Radial leads. It has a tolerance of ±20% and a 10000 hour lifetime. Size is 16mm dia x 25mm and temperature of operation is from -40 to 105°C