The ST561-8I from Piconics is a RF Inductor with Inductance 0.4 to 0.56 uH, DC Resistance 1 Ohms, DC Current 0.1 A, Self Resonant Frequency 250 MHz, Operating Temperature -55 to 125 Degree C. Tags: Thin Film Inductor. More details for ST561-8I can be seen below.