LTP100F

Resistance - Initial (Ri) (Min):	70 mOhms
Approvals:	CSA, TUV, UL
Lead Spacing:	--
Thickness (Max):	0.039" (1.00mm)
Height - Seated (Max):	--
Size / Dimension:	0.866" L x 0.199" W (22.00mm x 5.05mm)
Package / Case:	Strap
Mounting Type:	User Defined
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	260 mOhms
Series:	PolySwitch®, LTP
Time to Trip:	7s
Current - Trip (It):	2.5A
Current - Hold (Ih) (Max):	1A
Current - Max:	100A
Voltage - Max:	24V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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PTC Resettable Fuses: LTP100F Application Field and Working Principle

The PTC resettable fuses, specifically LTP100F, are specifically designed for use in distributed power architectures, high efficiency power supplies, and other applications where detection of overload and short circuit conditions is necessary. Their specific design allows them to offer improved surge and current protection capabilities, while still providing reliable and consistent performance.This type of fuse has the ability to provide protection against both over-voltage and short circuit hazards. In an over-voltage situation, the fuse deforms, which provides a break to the circuit. This helps to protect components from overloads and dangerous heat levels. In a short circuit situation, the fuse deformation instantaneously courses an interruption in the load current and thus protects both the device and the circuit from any potential damage.The working principle behind the LTP100F relies on a PTC (Positive Temperature Coefficient) material. This material will have an increasing resistive value until the maximum limit is reached. Once the current reaches the maximum limit, the resistive value will become infinite, thus providing an interruption to the load current. When the power supply is reset, the resistance of the PTC material will instantly reset back to its original state, thus permitting normal operation of the circuit.This feature set makes the LTP100F fuse a great choice for many different applications. For example, they are ideal for use in distributed power architectures where the fuse can protect circuit components against over-voltage and short circuit damage. Additionally, they can be used in a wide range of high-efficiency power supplies, providing extra protection against harmful power surges. Other common applications include the use of the fuse to protect consumer electronics, LEDs, and other small-scale electronics.The physical design of the fuse also factors into the overall effectiveness of the device. The small size of the LTP100F allows for easy installation into tight spaces, and the construction materials provide improved thermal characteristics. This is important because the fuse will need to be able to handle higher temperatures without deformation in order to consistently protect the circuit.In addition to the benefits the LTP100F offers, there are a few potential drawbacks to consider. The increased temperature range when compared to other fuse types means that degradation of the fuse may occur quicker. Additionally, because the small size requires less current to trip it, it may not always provide the same level of current protection as larger fuses.In the end, the LTP100F is a great choice for distributed power architectures, high-efficiency power supplies, and other specialized applications. Its small size allows for easy installation, and its robust materials provide improved thermal characteristics. Furthermore, the device’s PTC materials allow it to provide comprehensive protection against both over-voltage and short circuit hazards.

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