Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MMBTA55LT1G found under Transistor by Onsemi On Semiconductor. The National Stock Number assigned to this part is 5961016457037, 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 MMBTA55LT1G.