TRF250-120T-RC-B-0.5-2

Resistance - Initial (Ri) (Min):	5.4 Ohms
Approvals:	CSA, TUV, UL
Lead Spacing:	0.197" (5.00mm)
Thickness (Max):	--
Height - Seated (Max):	0.433" (11.00mm)
Size / Dimension:	0.256" L x 0.181" W (6.50mm x 4.60mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	14 Ohms
Series:	PolySwitch®, TRF250
Time to Trip:	3s
Current - Trip (It):	260mA
Current - Hold (Ih) (Max):	130mA
Current - Max:	3A
Voltage - Max:	60V (250V Int)
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

A PTC resettable fuse is a device that can protect against electrical faults, also known as overcurrent protection. This technology works by providing over-current protection and then resetting itself when the fault has been cleared. All of this occurs in a specifically-designed package that replaces traditional fuses in consumer electronic products and electronic systems.The TRF250-120T-RC-B-0.5-2 is an example of a PTC resettable fuse. This fuse is designed to provide a secondary, non-destructive protection circuit for over-current protection that can reset itself automatically in the event of a fault. This type of PTC resettable fuse is designed for surface-mount applications and is capable of providing reliable, second-level protection to a wide range of small-signal circuits.The TRF250-120T-RC-B-0.5-2 provides its protection by using a positive temperature coefficient (PTC) that is designed to increase its resistance with an increase in temperature. The current is monitored through the PTC and if the current level is too high a built-in, self-resetting circuit will activate and cut the flow of the power. When the fault is cleared, the fuse will reset itself and restore power.The TRF250-120T-RC-B-0.5-2 is suitable for a wide range of applications. It is often used in industrial and automotive circuits as a resetable protection device. It can also be used in all areas where a secondary, resetable over-current protection device is needed. This includes consumer electronic products such as cell phones, wireless audio equipment, portable electronic devices, and small industrial machines.The TRF250-120T-RC-B-0.5-2 is a low-cost solution for over-current protection and offers a high level of protection in a compact package. This fuse is typically mounted to a printed circuit board and can provide up to 0.5A of current protection with a maximum power dissipation of 2W. All of its components are RoHS compliant and it has an operating temperature range between -40°C and 70°C.Overall, the TRF250-120T-RC-B-0.5-2 is a reliable and cost-effective solution for providing over-current protection in a variety of applications. This type of PTC resettable fuse provides an additional layer of protection for small-signal circuits and is designed to react quickly and safely in the event of a fault. By using this type of fuse, product designs can be better protected from electrical faults and the dangers that come with them.

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