Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TDR3725 found under Relay Solid State by Nault Robert. The National Stock Number assigned to this part is 5945005228368, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TDR3725.