Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RX260P21909 found under Transistor by Mitsubishi Electronics America Inc. The National Stock Number assigned to this part is 5961013046696, 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 RX260P21909.