Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KBY1918U found under Microcircuit Linear by S E Associates Ltd Partnership. The National Stock Number assigned to this part is 5962014431857, 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 KBY1918U.