Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RS1740 found under Transistor by Raytheon Technical Services Company. The National Stock Number assigned to this part is 5961010194947, 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 RS1740.