RXEF135K-2 Circuit Protection

Time to Trip:	9.6s
Approvals:	CQC, CSA, TUV, UL
Lead Spacing:	0.199" (5.05mm)
Height - Seated (Max):	0.780" (19.80mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	300 mOhms
Resistance - Initial (Ri) (Min):	120 mOhms
Series:	PolySwitch®, RXEF
Current - Trip (It):	2.7A
Current - Hold (Ih) (Max):	1.35A
Current - Max:	40A
Voltage - Max:	72V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PTC Resettable Fuses: RXEF135K-2 Application Field and Working Principle

PTC (Positive Temperature Coefficient) Resettable Fuses are protective components that re-establish normal circuit operation upon expiration of an over-current event, eliminating the need to replace a fuse after an over-current event. They are widely used in consumer, commercial and industrial applications, ranging from portable electronics, automotive and motorized vehicles, home appliances, medical devices, and smart houses to consumer electronics, automotive machinery, power supply connections, and similar.The RXEF135K-2 PTC Resettable Fuse is one of the popular products in this category. As with all PTC Resettable Fuses, it acts as a protective element to prevent short-circuits, excess current, and surges in the circuit. It is rated with a nominal current of 135A and a trip current at 150A. The RXEF135K-2 operates at a rated voltage of 250VAC and a holding voltage of 250VAC. It is designed to fit into a panel-mount fuse holder having a dimension of 70mm x 42mm x 52mm, and is suitable for 18AWG to 14AWG wire range.PTC Resettable Fuses are based on a thermally-sensitive PTC element that is permanently connected in series with the circuit of which it offers protection. When this circuit is subjected to a current higher than its maximum rated current, the PTC will increase its resistance, thus creating an impedance in the circuit, diverting the current away from its normal path and reducing the current strength. It does this until the temperature of the element reaches a certain point, at which time the resistance of the element goes down and the device becomes again capable of conducting current.At this point the current will flow again as it did before the event. The time needed for this resetting procedure, also known as trip time, depends on the application, temperature, and over-current current strength. Generally, PTC Resettable Fuses are capable of resetting their current carrying capacity in milliseconds. If the overload current is maintained, the thermally-sensitive element will continue to self-limit the current until the situation can be remedied.The RXEF135K-2 PTC Resettable Fuse is equipped with protective features such as over-temperature protection, high impact strength, and low-cost structure that can withstand operating temperatures under extreme environments. Resettable fuses provide clear advantages over standard fuses, i.e. durability, higher level of component protection, and higher current carrying capacity.PTC Resettable Fuses are usually provided with an external terminal for the connection of the activator end of the fuse and back contact that goes from the activator to the power contact of the fuse. The connection from the activator terminal to the power contact is necessary to complete the circuit and make the device active. This mechanism allows for the resetting of the PTC Resettable Fuse in case an over-current event is detected.In summary, the RXEF135K-2 Resettable Fuse is a robust and cost-effective solution designed to protect the components of electronic circuits from the damage caused by short-circuits, excess current, and surges. It provides excellent protection against over-current and thermal issues, while still offering high levels of current carrying capacity. This makes the device suitable for many applications in the consumer, commercial, and industrial sectors.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description