Vishay 249 Series 1W Cermet Precision Linear Potentiometers 12mm Square - Vishay 249FGJS0XB25503KA, This 50K 1W precision potentiometer is a low cost cermet component that is suitable for PCB or panel mounting. Vishay 249FGJS0XB25503KA 50K ±10% 1W Cermet Potentiometer