Littelfuse 0.05A Resettable Fuse, 30V dc

The Littelfuse 1210L series PTC provides surface mount overcurrent protection for applications where space is at a premium and resettable protection is desired.

Surface Mount Technology

Resettable fuses are designed for the protection of electrical and electronic circuits against excessive currents. They switch rapidly from a low resistance to very high resistance state under electrical overload or short circuit conditions, and feature automatic reset and return to low resistance state when fault condition ceases and power is removed.