Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IC3500A406A1 found under Varistor by Ward Leonard Electric Company Inc. The National Stock Number assigned to this part is 5905011572716, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like IC3500A406A1.