MF-LS190RU

Time to Trip:	3s
Approvals:	cURus, TUV
Lead Spacing:	--
Thickness (Max):	0.030" (0.76mm)
Size / Dimension:	0.799" L x 0.543" W (20.30mm x 13.80mm)
Package / Case:	Strap
Mounting Type:	User Defined
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	100 mOhms
Resistance - Initial (Ri) (Min):	30 mOhms
Series:	Multifuse®, MF-LS
Current - Trip (It):	4.2A
Current - Hold (Ih) (Max):	1.9A
Current - Max:	100A
Voltage - Max:	15V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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PTC Resettable Fuses - MF-LS190RU

PTC resettable fuses are a type of device that provides both short-circuit and overload protection for circuits. They are also known as polymeric positive temperature coefficient fuses, PPTC fuses, Smart Fuses, and Self-Recovering Fuses. One such fuse is the MF-LS190RU, which is commonly used in microcontroller applications.The MF-LS190RU is a resettable PTC featuring a quick reaction time and high current capacity. It is small and lightweight yet highly reliable. It consists of a PTC element, integrated with an epoxy casing and a pair of copper conductors.The working principle of the MF-LS190RU is based on the principle of thermal resistance. When the temperature rises above a certain threshold, it causes the resistance of the PTC element to exponentially increase. This increase in resistance creates further heat, which drives the resistance even higher and eventually trips the fuse. To reset the fuse, the temperature must be reduced to below the threshold level.The MF-LS190RU provides short-circuit protection by limiting the amount of current that flows through the circuit when an overload condition is detected. This limits the risk of circuit damage due to excessive current flow. Furthermore, this resettable fuse also helps to reduce power fluctuations that can be caused by voltage drops or surges.The MF-LS190RU has a wide range of applications in industrial, automotive, and consumer electronics. It is commonly used in microcontroller applications, to protect circuits from excessive currents caused by short circuits or overloads.The MF-LS190RU has several advantages over traditional fuses. It is highly reliable, due to its PTC element and epoxy casing, and it can react quickly to short-circuit and overload conditions. Additionally, it can be reset easily without the need for replacement fuses, saving both time and money.Overall, PTC resettable fuses have become increasingly popular due to their reliability and efficiency. The MF-LS190RU is a highly reliable and efficient resettable fuse, which can provide effective protection to a wide range of circuits. It is ideal for use in microcontroller applications, where it can provide short-circuit and overload protection, while also helping to reduce power fluctuations.

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