The KMG-50V1000-12.5*25 with Aluminum Electrolytic Capacitors - Leaded 1000uF ±20% 50V Radial,12.5x25mm RoHS, manufactured by SamYoung, is an aluminum electrolytic capacitor, used to store electric charge and filter noise from power supplies. This particular capacitor is rated at 1000uF (microfarads), has a working voltage of 50V, dimensions of 12.5mm x 25mm, and a tolerance of ±20%. It is also compliant with hazardous materials regulations, as indicated by its RoHS designation.