Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SL54S181 BKA found under Microcircuit Digital by Lansdale Semiconductor Inc. The National Stock Number assigned to this part is 5962012009723, 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 SL54S181 BKA.