Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S44-300-020 found under Semiconductor Device Thyristor by Varo Electron Devices. The National Stock Number assigned to this part is 5961011665999, 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 S44-300-020.