, Inc.
R5339-3 is a PPTC (Polymeric Positive Temperature Coefficient) Resettable fuse made by Littelfuse. It is a current limiting circuit protection device with both high current and high power dissipation capability. The part features a us current rating of 3A, a reset voltage of 5V, an open-circuit voltage of 3V, and a power dissipation of 1.35W. The device has a minute standoff height of 1.95mm and is designed for use in consumer, automotive, and industrial applications where low-fault current and high-power dissipation is required.