Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BUZ45 found under Transistor by Siemens Components Inc. The National Stock Number assigned to this part is 5961012760497, 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 BUZ45.