The 5310 XXX,5 from Smiths Interconnect is a Resistor with Resistance 25 to 250 Ohms, Power Rating 25 W, Tolerance ±5%. Tags: Flanged, 25 to 250 Ohms, 5 to 150 Ohms, 250 W, Flanged Thin Film RF Resistor. More details for 5310 XXX,5 can be seen below.