MF-RX135/72-0-14 is a PTC resettable fuse from Bourns' MF-R Series designed for overcurrent protection in electronic circuits. This radial leaded device features a maximum voltage rating of 30 V, maximum current rating of 40 A, and a hold current of 1.35 A with a trip resistance of 2.70 O. The fuse exhibits an initial post-trip resistance of 0.065 O at 23°C and a 1-hour maximum resistance of 0.115 O, with a time-to-trip of 0.17 seconds under fault conditions. The device is housed in a Style 1 package with kinked leads (suffix -14), constructed with Sn/Cu lead material, and meets UL 94V-0 flame retardant requirements. It is RoHS compliant and halogen-free, making it suitable for applications requiring reliable circuit protection in consumer electronics, industrial equipment, and telecommunications systems.