The 1206S4J0120T5E is a surface mount precision resistor manufactured by Royal Ohm. It features a ±1% tolerance, a 120 Ohm resistance value, a 4 watt rating and a T5E conbfiguration, meaning it is 5% tolerance, 0.25W, ±100ppm/°C, resisitance Change over Temperature coefficient. The resistor has a temperature coefficient of ±100 ppm/°C, a power dissipation of 4W at 70 °C, and a maximum surge overload of 14W at 10ms.