Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 52CST319523 found under Transistor by Bookham Technology Plc. The National Stock Number assigned to this part is 5961004164897, 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 52CST319523.