The 81 7001B from Smiths Interconnect is a Resistor with Resistance 25 to 200 Ohms, Power Rating 5 W, Tolerance ±5%. Tags: Surface Mount, Chip, 25 to 200 Ohms, 100 to 250 Ohms, 10 W, Tab & Cover Thin Film RF Resistor. More details for 81 7001B can be seen below.