Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ETC4 1 2 found under Microcircuit Linear by M A Com Inc. The National Stock Number assigned to this part is 5962016409368, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ETC4 1 2.