Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DR1 39R 2 .25W found under Resistor Fixed Film by Croster Electronics. The National Stock Number assigned to this part is 5905011582318, 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 DR1 39R 2 .25W.