Royalohm is a brand of fixed resistors, which are electronic components that are used to limit or control the flow of electric current in a circuit. Royalohm Fixed Resistor is a resistor whose resistance value is fixed and cannot be adjusted. Axial leaded resistors are the traditional through-hole type resistors with leads emerging from both ends. Surface mount resistors are small and flat, designed to be directly mounted onto a circuit board. CRoyalohm Fixed Resistor is an even smaller surface mount component, often used in high-density circuits.