Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LM121AH MIL found under Microcircuit Linear by Now Electronicsinc. The National Stock Number assigned to this part is 5962010833925, 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 LM121AH MIL.