FBK04F05L is a 5Vdc fan from NMB Technologies Corporation that has gone obsolete. OD4020-05LB from Orion Fans has been offered as a possible substitute.
To verify this part will work in your application or to view full specifications see the manufacturer datasheet. https://orionfans.com/productFiles/datasheet/OD4020.pdf
The TechForum Cross Reference category is for parts that Digi-Key does not sell or parts that have gone obsolete. Our Engineers and Techs have reviewed the specifications for these parts and made a recommendation for a replacement. Please review the suggested part to ensure it will work for your application.