The 81 3003TC from Smiths Interconnect is a Resistor with Resistance 5 to 120 Ohms, Power Rating 50 W, Tolerance ±5%. Tags: Tab & Cover, 5 to 120 Ohms, 25 to 250 Ohms, 25 W, Flanged Thick Film RF Resistor. More details for 81 3003TC can be seen below.