RUEF250-AP

Resistance - Initial (Ri) (Min):	20 mOhms
Approvals:	CQC, CSA, TUV, UL
Lead Spacing:	0.199" (5.05mm)
Thickness (Max):	--
Height - Seated (Max):	0.720" (18.30mm)
Size / Dimension:	0.449" L x 0.118" W (11.40mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	70 mOhms
Series:	PolySwitch®, RUEF
Time to Trip:	10.3s
Current - Trip (It):	5A
Current - Hold (Ih) (Max):	2.5A
Current - Max:	100A
Voltage - Max:	30V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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PTC Resettable Fuses

PTC resettable fuses are circuit protection components that continuously monitor current passing through them. When the current reaches a predetermined level, the fuse “trips” or opens the circuit, interrupting the current flow. The fuse does not have to be replaced after it trips; instead, it can be manually reset and thereby restored to an operational condition. One example of such components is RUEF250-AP.RUEF250-AP is a polymeric positive temperature coefficient of resistance (PPTC) resettable fuse designed for automotive and industrial applications. It has high current ratings, fast trips times and offers reliable overcurrent protection for up to 250V. It is made of UL94V-0 glass filled PLA with an operating temperature between -55 °C and +125 °C. The components are relatively small, measuring only 28mm x 10mm x 6mm, making them suitable for many space restricted applications.In terms of its working principle, RUEF250-AP incorporates the PPTC technology which is similar to self-healing, solid-state fuses. When an over-current situation occurs, the PPTC device will immediately respond by increasing its resistance, thus cutting off the current flow and thus protecting the circuit. In addition, it will remain in the tripped condition until the over-current situation is restored to a safe level. Then, once the current has returned to its normal value, the PPTC device will automatically and almost instantaneously reset itself to a low resistance state. This self-resetting capability means that no user intervention is required and overcurrent incidents will be cleared quickly and without any damage to the circuit.In terms of its application field, RUEF250-AP is primarily used in power converters, motor control applications, DC/DC converters, Adaptive Front Lighting Systems, Solar Energy, and many other industrial and automotive applications. Its robust construction, temperature, and voltage resistant feature enable it to be used in all kinds of extreme weather conditions. It provides effective and safe overcurrent protection of defective components, while also acting as a circuit breaker. In addition, its simple and efficient design makes it easy to install and use.In conclusion, RUEF250-AP is a type of PPTC resettable fuse which provides reliable protection against overcurrent events. Its robust construction and reliable operating temperature range make it suitable for a wide range of automotive and industrial applications. Its fast trip time and self-resetting capability mean it is easy to use and maintain, and does not require the user to intervene or replace the fuse.

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Part Number	Manufacturer	Price	Quantity	Description