MF-R900-2-99

Resistance - Initial (Ri) (Min):	5 mOhms
Approvals:	cURus, TUV
Lead Spacing:	0.402" (10.20mm)
Thickness (Max):	--
Height - Seated (Max):	1.295" (32.90mm)
Size / Dimension:	0.953" L x 0.118" W (24.20mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	20 mOhms
Series:	Multifuse®, MF-R
Time to Trip:	20s
Current - Trip (It):	18A
Current - Hold (Ih) (Max):	9A
Current - Max:	40A
Voltage - Max:	30V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Not For New Designs
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to PTC Resettable Fuses

PTC Resettable Fuses, also known as Polymeric Positive Temperature Coefficient of Resettable Fuses, are a type of fuse that can be automatically reset after their circuit is tripped. This type of fuse is widely used in the automotive, commercial, and industrial applications due to its convenience and low cost. The MF-R900-2-99 application field and working principle is one of the examples of PTC resettable fuses.

The Features and Benefits of PTC Resettable Fuses

PTC Resettable Fuses have some features that make them desirable for many users. First of all, they are highly reliable and offer the highest degree of protection. This makes them an excellent choice for power audio equipment, computer systems, and other electronics. Unlike standard fuses, they are much smaller, which makes them easier to install and replace. Another major benefit of PTC Resettable Fuses is their ability to automatically reset after a circuit is tripped. This prevents costly equipment failure that can occur when a traditional fuse is tripped, and the user has to reset it manually.

The MF-R900-2-99 Application Field and Working Principle

The MF-R900-2-99 is a PTC Resettable Fuse designed for high-current applications that require frequent resetting and protection. It offers excellent resistance to radiation, vibration, and environmental extremes. The MF-R900-2-99 is typically used for power sources, distribution, and electrical gadgets. It is also widely used in industrial and automation control systems, as well as in televisions, audio and medical applications.The working principle of the MF-R900-2-99 is based on a thermally activated circuit. When the current load is too great, the heat generated from the resistive element causes the thermal sensor to open the circuit. Once the current is lowered, the thermal element cools down, allowing the PTC Resettable Fuse to automatically reset itself. This type of fuse is designed with a high melting point, which ensures its safety in extreme temperature conditions.

Conclusion

PTC Resettable Fuses offer excellent convenience and safety for a variety of electronic applications. The MF-R900-2-99 is one example that is designed for high-current applications that require frequent resetting and protection. It offers excellent resistance to radiation, vibration, and environmental extremes, making it suitable for power sources, distribution, and electrical gadgets. It is also widely used in industrial and automation control systems, as well as in televisions, audio, and medical applications.

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