Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 49128 found under Isolator Radio Freq by Drs Icas Llc. The National Stock Number assigned to this part is 5985015313809, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 49128.