VTP175DF

Size / Dimension:	--
Height - Seated (Max):	--
Thickness (Max):	--
Lead Spacing:	--
Approvals:	CSA, TUV, UL
Series:	PolySwitch®, VTP
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	16V
Current - Max:	100A
Current - Hold (Ih) (Max):	1.75A
Current - Trip (It):	3.6A
Time to Trip:	5s
Resistance - Initial (Ri) (Min):	29 mOhms
Resistance - Post Trip (R1) (Max):	102 mOhms
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	User Defined
Package / Case:	Strap

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Introduction
PTC Resettable Fuse is an electrical device used for protection against electrical overcurrent conditions. It is a non-volatile fuse (NVPF) and it operates at a predetermined current level. It has a built-in current sensing circuit which is activated when an overcurrent occurs. When an overcurrent happens, it blows the fuse and then automatically resets the current level, thus protecting the circuit in the event of an overload.
The VTP175FR is an example of PTC Resettable Fuse manufactured by Littelfuse. It is available with rated current from 0.6A to 30A and rated voltage from 250VAC to 500VAC. It is suitable for DC and AC circuits and is UL and CSA listed. It is also available in surface mount, screw mount and PCB style packages.
Application Field of VTP175FR
The VTP175FR PTC Resettable Fuse is used in a wide range of electronic, automotive, security, computer and industrial applications. In electronic and automotive applications, the VTP175FR is used for overcurrent protection in circuits such as motors, door and window motors, power supply, AC power lines, portable electronic devices and mobile phones. In the security industry, it is used to protect against surges in power lines and to protect sensitive security devices such as fire and burglar alarm systems. In computer systems, the VTP175FR is used to protect against power supply overloading and to detect electrical faults. It is also used in industrial applications such as in HVAC controls, sensors, heaters, lighting control systems and electrical power distribution.
Working Principle of VTP175FR
The VTP175FR PTC Resettable Fuse works by sensing an overcurrent in the circuit and then automatically tripping the fuse. When an overcurrent is detected, the fuse melts and the current flow is interrupted. After the overcurrent condition is cleared, the fuse will reset and the circuit can continue to operate normally. The overcurrent sensing and resetting process is repeated as long as the conditions exist. The VTP175FR PTC Resettable Fuse is designed to withstand surges and high inrush currents during resetting.
The VTP175FR PTC Resettable Fuse has several features that make it an attractive option for overcurrent protection. It is small and has a low price point. It also has a high surge rating for circuit protection and is UL and CSA listed. The VTP175FR can handle high inrush currents and surges up to 1,000V. Finally, it has a long life, up to 100,000 operations, and is also RoHS compliant.
Conclusion
The VTP175FR PTC Resettable Fuse is an ideal choice for overcurrent protection in a wide variety of applications. It is UL and CSA listed, has a high surge rating, and is also RoHS compliant. It also has a long operational life and is a low-cost solution for circuit protection. With its wide range of applications and reliable performance, the VTP175FR PTC Resettable Fuse is a smart choice for overcurrent protection.

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