VLP270F

Resistance - Initial (Ri) (Min):	12 mOhms
Approvals:	CSA, TUV, UL
Lead Spacing:	--
Thickness (Max):	0.032" (0.80mm)
Height - Seated (Max):	--
Size / Dimension:	0.866" L x 0.201" W (22.00mm x 5.10mm)
Package / Case:	Strap
Mounting Type:	User Defined
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	36 mOhms
Series:	PolySwitch®, VLP
Time to Trip:	5s
Current - Trip (It):	6.5A
Current - Hold (Ih) (Max):	2.7A
Current - Max:	60A
Voltage - Max:	16V
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, also known as polymeric positive temperature coefficient (PPTC) devices, are self resetting, solid state overcurrent protection devices, which are designed to protect batteries and other electronic components from damage caused by current overloads. The VLP270F is a type of PTC resettable fuse, which is designed for applications in mobile phones, electrical and electronic products and other devices which require protection from overcurrent surges.

VLP270F Application field

The VLP270F is a surface mount device, which is particularly suitable for use in miniature electronic products. It offers high current protection in a compact package, with a low voltage drop. It also offers a wide range of over-current protection, from 3A to 10A, and is rated to 12V. The PTC device provides a fast response to over-current conditions and can be used to protect against both temporary and sustained over-currents, and its low profile design makes it ideal for use in space-constrained applications.

VLP270F Working Principle

The working principle of the VLP270F, like all PTC resettable fuses, is based on a physical change that occurs when the device is exposed to an over-current. The PTC device is made of a thermistor material, which is designed to have a low electrical resistance at normal current levels, allowing current to flow freely through the device. When an over-current occurs, the temperature of the PTC device increases having an effect on the thermistor material, causing its electrical resistance to increase, thus limiting the amount of current that can flow through the device. When the over-current is removed, the device will cool down and reset itself, thus restoring the normal current flow.

Control Performance

The control performance of the VLP270F is optimized by the design of the PTC material and the configuration of the device. The PTC device is designed to protect against both short duration and continuous over-currents, and provide a fast response time. The PTC material’s high current protection capabilities are also optimized by the current limit control, which ensures the current will be properly distributed throughout the device.

Features

The VLP270F has many features which make it an ideal choice for over-current protection. It offers a wide range of protection levels from 3A to 10A, and is rated to 12V. It has a low voltage drop and fast response time to over-current conditions, and its small size makes it suitable for use in even the most space-constrained applications. Furthermore, it is lightweight and has low power consumption for battery powered applications, and its surface mount design makes it quick and easy to install.

Conclusion

The VLP270F is an ideal choice for PTC resettable fuse applications, with its wide range of over-current protection, fast response time, low profile design and fast installation. It is an excellent solution for protecting electronic components from damage caused by over-currents, and its small size makes it an ideal choice for use in space-constrained applications.

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