MF-RX375-005

Resistance - Initial (Ri) (Min):	30 mOhms
Approvals:	cURus, TUV
Lead Spacing:	0.402" (10.20mm)
Thickness (Max):	--
Height - Seated (Max):	1.319" (33.50mm)
Size / Dimension:	1.118" L x 0.122" W (28.40mm x 3.10mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	80 mOhms
Series:	Multifuse®, MF-RX
Time to Trip:	24s
Current - Trip (It):	7.5A
Current - Hold (Ih) (Max):	3.75A
Current - Max:	40A
Voltage - Max:	60V
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 are also known as resettable thermal cutouts, polymeric positive temperature coefficient (PPTC) fuses, or polyswitch fuses. They are reusable safety devices commonly used in consumer electronics such as power supplies, video game systems, and audio/visual devices. These devices are designed to protect against electrical surges, overloads, and short circuits.The MF-RX375-005 resettable fuse is a high-performance device designed to protect sensitive electronic equipment from over-current damage. It features a special polymeric PTC glass-fiber substrate that trips when the current reaches a preset level, and then automatically resets when the current decreases to a safe level. The MF-RX375-005 is designed to operate reliably in harsh environmental conditions, and is often used in automotive and industrial applications.The MF-RX375-005 resettable fuse has an impressive operating temperature range from -40° C to 125° C. It also features a high current rating of 375A, and a current breaking capacity of 600A. The device has a low I2t value and fast break time, allowing it to respond quickly in emergency situations.The device\'s working principle is based on the PTC effect, which is the ability of some polymers to change their electrical properties when subjected to temperature changes. When current passes through the polymeric substrate, it generates heat, which causes the device to undergo a permanent change in electrical resistance. This causes the device to trip, and the current is diverted away from the load until the temperature is reduced to the point where the device can reset.The MF-RX375-005 resettable fuse is designed to provide protection for power supplies and devices found in a variety of automotive, industrial, and residential applications. It is designed to protect against overloads, short circuits, and surges, as well as providing noise filtering. It is also capable of operating in a wide range of environmental conditions, making it an ideal solution for a variety of applications.

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