MF-MSMF050-2 Circuit Protection

Resistance - Initial (Ri) (Min):	150 mOhms
Approvals:	cURus, TUV
Lead Spacing:	--
Thickness (Max):	0.033" (0.85mm)
Height - Seated (Max):	--
Size / Dimension:	0.179" L x 0.128" W (4.55mm x 3.24mm)
Package / Case:	1812 (4532 Metric), Concave
Mounting Type:	Surface Mount
Ratings:	AEC-Q200
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	1 Ohms
Series:	Multifuse®, MF-MSMF
Time to Trip:	150ms
Current - Trip (It):	1A
Current - Hold (Ih) (Max):	500mA
Current - Max:	100A
Voltage - Max:	15V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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PTC Resettable Fuses

PTC resettable fuses such as the MF-MSMF050-2 offer a range of solutions to electrical system protection scenarios in a wide variety of applications. These versatile fuses are designed to protect circuits from both electrical and mechanical stresses, and reset automatically after an overload or short circuit event.The MF-MSMF050-2 offers a unique combination of features that allows it to provide both over- and under-voltage protection, together with over-current protection. In addition, these devices are designed to detect ground-fault conditions – in which a live wire has come into contact with the metal chassis of the device, typically in the form of a short circuit.The operational working principle of the MF-MSMF050-2 is relatively straightforward. The fuse consists of a conductive metal core and a thermal fuse that wraps around the metal core. When current flows through the device, the metal core heats up, and the thermal fuse deforms. The deformation of the thermal fuse changes the electrical resistance of the device, which increases with increased temperature. This increased resistance causes the electrical current through the device to decrease, until eventually the current stops completely.The device has a series of safety features that help to prevent further damage occurring due to the overload or short circuit situation. Firstly, the protective features of the thermal fuse ensure that if the device is overloaded, the resistance of the device will gradually increase, until the current flow is completely stopped. Secondly, the device is designed to be self-resetting, meaning that when the temperature drops below a certain threshold level, the device will reset itself and be ready to resume normal operations.Finally, the device is specifically designed so that it can handle high levels of current without damage to the thermal fuse. This means that it is able to protect circuits from short circuits, overloads, and under-voltage conditions without damage to the fuse.Overall, the MF-MSMF050-2 is an extremely reliable and versatile resettable fuse. It offers a range of benefits and features in its application field, including over- and under-voltage protection, over-current protection, and protection against ground fault conditions. The device’s ability to self-reset also offers a substantial level of flexibility and convenience, allowing it to continue functioning effectively when overloaded or shorted. Finally, its high current handling capabilities make it well suited for applications that require a resettable fuse with considerable current-handling capabilities.

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