YPAL1.20N

Resistance - 25°C (Typ):	1.2 Ohms
Approvals:	--
Lead Spacing:	0.200" (5.08mm)
Thickness (Max):	--
Height - Seated (Max):	0.492" (12.50mm)
Size / Dimension:	0.433" Dia x 0.138" W (11.00mm x 3.50mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	0°C ~ 60°C
Series:	YP
Current - Trip (It):	1.2A
Current - Hold (Ih) (Max):	600mA
Current - Max:	4.3A
Voltage - Max:	30V
Type:	Ceramic
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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An Overview of the PTC Resettable Fuses YPAL1.20N

PTC resettable fuses are fuses that self-regulate and reset themselves when the current that passes through the fuse reaches a preset threshold. These fuses offer reliable protection and can seemingly "heal". PTC resettable fuses are also compact and lightweight, making them ideal for everyday applications. YPAL1.20N is a miniature PTC device designed to protect low current circuits from short circuit and overload in automotive and high-voltage equipment.

YPAL1.20N Application Field

YPAL1.20N is designed for low-current devices, such as automotive, communication, household appliances, telephones, toys, and digital cameras. It was initially developed as an effective remedy against the risk of fire risk caused by overloads, such as those caused by high voltage lines, short circuits, or defective components.YKAL contains a solid silver-oxide material, providing precision and fast energy absorption. This material exhibits superior temperature stability and is designed to act quickly at short-circuit events. Its power capability is suitable for designing circuits in many power-occupying applications.

YPAL1.20N Working Principle

YPAL1.20N consists of a PTC resistor encapsulated in a metal housing. The resistor is composed of a special polymer material formed into an insulating, heat-resistant, and flexible film. As the current passing through the PTC resistor increases, a chemical reaction produces heat. This heat causes the PTC resistor to expand, so that more area is exposed to the heat. As a result, the current passing through the PTC resistor is reduced, and hence it stops the current from flowing.When the current passing through the fuse decreases and reaches its normal value, the PTC resistor will cool down and shrinks back to its original size. This process allows the device to reset itself and be ready for another overload if necessary.

Conclusion

The YPAL1.20N PTC resettable fuses are a reliable thermal protection solution for a wide range of applications. Its self-regulating current allows it to detect and prevent electrical problems, while its resettable feature allows it to heal itself, without the need for manual resetting. Moreover, its low size and weight make it the ideal choice for automotive, household appliances, and consumer electronics.

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