146/150 Series 7mm Tunable RF Coils Coilcraft 146 and 150 Series 7mm Tunable RF Coils provide the compactness of a 7mm coil and the low drift reliability of an insert molded coil. Standard inductance values for this Coilcraft series range from less than 50nH to over 500nH. The 150 Series includes coils with a tap to meet specific requirements. Coilcraft 146 and 150 coils feature precision-molding windings into a single piece of polypropylene for mechanical and electrical stability. Optional plated brass shield cans with solderable tabs provide integral shielding and additional mounting stability.