RXEF050 polyswitch resettable fuse by Littelfuse (formerly Raychem) Trip current 1.A Hold current 0.5A Max current 40A Max voltage 72V Lead pitch 5.1mm x 0.5mm diameter. Dimensions 7mm dia. x 2.1 thick. Download Littelfuse resettable fuse .pdf datasheet: UL and TUV approved RoHS compliant: YES