Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ROF 137 5320 1 found under Circuit Card Assembly by Ericsson Components Inc. The National Stock Number assigned to this part is 5998014506181, and the Federal Supply Class is 5998 Electrical And Electronic Assemblies Boards Cards And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ROF 137 5320 1.