The AISC-0603-R42J-T from Abracon LLC is a RF Inductor with Inductance 0.42 µH, DC Resistance 5.4 Ohms, DC Current 0.09 A, Self Resonant Frequency 800 MHz, Operating Temperature -40 to 125 Degree C. Tags: Wire Wound Inductor. More details for AISC-0603-R42J-T can be seen below.