Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OPA111BM found under Microcircuit Linear by Western Reserve Electronics Inc. The National Stock Number assigned to this part is 5962012766460, 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 OPA111BM.