Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK3577 5408 found under Semiconductor Device Thyristor by Thomson Csf Components Corp. The National Stock Number assigned to this part is 5961013188824, 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 SK3577 5408.