BOURNS MF-R075 Resettable PPTC Fuse, 60V DC, 750mA, 6.3s, Round

The BOURNS MF-R075 is a high-quality radial leaded PPTC (Polymer Positive Temperature Coefficient) resettable fuse from the renowned MF-R series. Designed to provide reliable overcurrent protection in low-voltage electronic circuits, this component offers the distinct advantage of automatically resetting itself once a fault condition has been cleared. This eliminates the need for manual replacement, making it an efficient and cost-effective solution for safeguarding sensitive components and preventing catastrophic failures.

Engineered with robust materials, the fuse is coated in a flame-retardant epoxy that meets the stringent UL 94V-0 safety standard, ensuring excellent resistance to ignition. Furthermore, the product is fully compliant with RoHS (Restriction of Hazardous Substances) directives and is manufactured to be halogen-free, aligning with modern environmental and safety regulations.

Key Performance Specifications

• Hold Current (Ihold): 0.75A at 23°C – the maximum current the device can carry without tripping.
• Trip Current (Itrip): 1.50A at 23°C – the current level at which the device will activate and enter a high-resistance state.
• Maximum Voltage (Vmax): 60V DC – the highest voltage the device can withstand while in the tripped state.
• Maximum Current (Imax): 40A – the absolute maximum interrupt current.
• Time to Trip: 6.3 seconds – the typical time taken to trip under specified fault conditions.
• Initial Resistance: Very low, ranging from a minimum of 0.18Ω to a maximum of 0.40Ω, minimising power loss during normal operation.

Its compact, round radial-leaded package with a standard 5.1mm lead spacing makes it suitable for through-hole PCB (printed circuit board) mounting, offering design flexibility and ease of integration into a wide array of electronic assemblies.