Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ETI0021-6012B1 found under Solar Cell by Energy Technologies Inc. The National Stock Number assigned to this part is 6117016408520, and the Federal Supply Class is 6117 Solar Electric Power Systems. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ETI0021-6012B1.