Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ZTK33B found under Semiconductor Devic by Itt Semiconductors. The National Stock Number assigned to this part is 5961011862367, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ZTK33B.