The TT684-1F-01 from Piconics is a RF Inductor with Inductance 340 to 680 uH, DC Resistance 53 Ohms, DC Current 0.015 A, Self Resonant Frequency 2 MHz, Operating Temperature -55 to 125 Degree C. Tags: Thin Film Inductor. More details for TT684-1F-01 can be seen below.