The 0603HP-R12X_R_ from Coilcraft is a RF Inductor with Inductance 120 nH, DC Resistance 0.72 Ohms, DC Current 0.42 A(420 mA), Self Resonant Frequency 1.55 GHz, Operating Temperature -40 to 125 Degree C. Tags: Ceramic Inductor, Chip Inductor. More details for 0603HP-R12X_R_ can be seen below.