Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 221G3112-1-1 found under Microcircuit Digital by Herley Chicago. The National Stock Number assigned to this part is 5962001474504, 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 221G3112-1-1.