Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ICL-339F04FS found under Amplifier Intermediate Frequency by Rhg Electronics Laboratory Inc. The National Stock Number assigned to this part is 5996011736112, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ICL-339F04FS.