The 81 3075TC from Smiths Interconnect is a Resistor with Resistance 12 to 400 Ohms, Power Rating 150 W, Tolerance ±5%. Tags: Tab & Cover, 12 to 400 Ohms, 10 to 400 Ohms, 40 W, Flanged Thin Film RF Resistor. More details for 81 3075TC can be seen below.