Resistance - Initial (Ri) (Min):	8.8 mOhms
Approvals:	cURus
Lead Spacing:	0.201" (5.10mm)
Thickness (Max):	--
Height - Seated (Max):	0.776" (19.70mm)
Size / Dimension:	0.441" L x 0.118" W (11.20mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	AEC-Q200
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	24 mOhms
Series:	Multifuse®, MF-RG
Time to Trip:	3.5s
Current - Trip (It):	11.1A
Current - Hold (Ih) (Max):	6.5A
Current - Max:	100A
Voltage - Max:	16V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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PTC Resettable Fuses

PTC resettable fuses (also known as PolyFuse or polymeric positive temperature coefficient (PPTC) resettable fuses) are a type of device designed to replace traditional one-time fuses, such as ceramic or glass tube fuses. These types of fuses are designed to open circuit on an overcurrent situation, and then automatically reset when the current is removed. This process is often more reliable than a traditional fuse, as it offers a greater degree of protection against damage due to surges or spikes.The MF-RG650-0 is one such PTC resettable fuse. It is an overcurrent protection device, designed to help protect against overcurrents due to short circuits or abnormal conditions in electrical systems. It is rated for 650VAC, with a nominal current of 80A - making it suitable for a wide range of applications.The MF-RG650-0 has two main electrical components - a PTC thermistor, and a metal fuse element. These two components are connected together in an assembly, and enclosed in a plastic casing. The PTC thermistor is essentially a temperature sensor, and is designed to detect when the current being drawn is outside of the normal operational range. When it senses an overcurrent situation, the PTC thermistor will act to increase its resistance - in the case of the MF-RG650-0, this can increase its resistance by up to 1000X. This increased resistance causes the metal fuse element to heat up and eventually melt, thus opening the circuit and interrupting the flow of electricity.Once the excess current is removed, the PTC thermistor will slowly cool down, allowing its resistance to return to normal. The metal fuse element will also slowly cool down and reset itself, thus returning the MF-RG650-0 to its original state and allowing the flow of electricity to resume.The MF-RG650-0 is an ideal device for applications that require high-current protection, such as automotive, infrastructure, emergency lighting, or any other critical applications. Due to its features, it is also suitable for use in high-reliability applications that cannot tolerate component failure, such as IT systems, alarm systems, and medical equipment.In summary, the MF-RG650-0 PTC resettable fuse is one of the most reliable forms of overcurrent protection available. It is easy to install, with a simple two-part design that requires little to no maintenance. Its ability to automatically reset itself after an overcurrent situation has been resolved makes it highly efficient and dependable, making it the perfect choice for applications where reliability and safety are essential.

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