The ST681-8I from Piconics is a RF Inductor with Inductance 0.5 to 0.68 uH, DC Resistance 1.3 Ohms, DC Current 0.1 A, Self Resonant Frequency 240 MHz, Operating Temperature -55 to 125 Degree C. Tags: Thin Film Inductor. More details for ST681-8I can be seen below.