The 81 7107TC /4 from Smiths Interconnect is a Resistor with Resistance 10 to 250 Ohms, Power Rating 40 W, Tolerance ±5%. Tags: Tab & Cover, 10 to 250 Ohms, 3 to 250 Ohms, 20 W, Flanged Thin Film RF Resistor. More details for 81 7107TC /4 can be seen below.