The RC1210FR-0743RL is a type of thick film resistor manufactured by Yageo. It is a surface-mount device (SMD) with a tolerance of 1%, a power rating of 500 mW, and a resistance of 43 Ohms. It is packaged in a 1210 size and is used in electronic circuit designs to control and limit the flow of current. It has a high temperature co-efficient of resistance, high reliability, and good general corrosion resistance. It is often used in automotive applications, telecom equipment, and industrial equipment.