Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WB2907D found under Arrester Lightning by Motorola Solutions Inc. The National Stock Number assigned to this part is 5920016056946, and the Federal Supply Class is 5920 Fuses Arresters Absorbers And Protector. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WB2907D.