Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3195478-1 found under Lamp Transistor Grid Modulator by Raytheon Technical Services Company. The National Stock Number assigned to this part is 1430002945720, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3195478-1.