The AC1206FR-074R12L is a thick film resistor manufactured by Yageo. It is an SMD (surface mounted device) that is used in a variety of electronic equipment, such as computers, audio equipment, telecommunications, and automotive applications. The device's power rating is at 1/8 watt, and the resistor has 4 bands of color coding with a tolerance rating of ±5%. It is commonly used to regulate current and voltage levels. The AC1206FR-074R12L is a 4-digit part number of 74R12L that consists of the resistance value and tolerance code. The AC1206FR indicates the size of the device that is 1206, which is measured in millimeters.