The 81 3005A from Smiths Interconnect is a Resistor with Resistance 5 to 120 Ohms, Power Rating 30 W, Tolerance ±5%. Tags: Surface Mount, Chip, 5 to 120 Ohms, 12 to 400 Ohms, 150 W, Tab & Cover Thin Film RF Resistor. More details for 81 3005A can be seen below.