Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40525 found under Semiconductor Device Thyristor by Rca Corp. The National Stock Number assigned to this part is 5961004521253, 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 40525.