Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3554HR found under Microcircuit Linear by Teledyne Industries Inc. The National Stock Number assigned to this part is 5962012665502, 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 3554HR.