0ZRA1200FF1A

Resistance - Initial (Ri) (Min):	2 mOhms
Approvals:	cURus, TUV
Lead Spacing:	0.402" (10.20mm)
Thickness (Max):	--
Height - Seated (Max):	1.102" (28.00mm)
Size / Dimension:	0.689" L x 0.142" W (17.50mm x 3.60mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	9 mOhms
Series:	0ZRA
Time to Trip:	16s
Current - Trip (It):	20.4A
Current - Hold (Ih) (Max):	12A
Current - Max:	100A
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 are devices that are designed to protect electrical systems from overcurrents and short circuits. They are commonly used in consumer products and industrial equipment, such as computers, appliances, power strips, and fuse boxes. The 0ZRA1200FF1A product is an example of a PTC Resettable fuse.

Application Field

PTC Resettable Fuses have a wide variety of applications. They can be used in consumer products, industrial equipment, and medical devices. In consumer products, they are used to protect against overcurrents or short circuits in power strips, surge protectors, computers, and other electronics. In industrial equipment, they protect equipment such as control panels, motors, and transformers. In medical devices, they protect implanted defibrillators or pacemakers from overvoltage or short circuits.

Working Principle

PTC Resettable Fuses work by using a Polymeric Positive Temperature Coefficient (PPTC) element. The PPTC element has a temperature coefficient that is positive, which means that its resistance increases with temperature. When an overload current passes through the fuse, the PPTC element heats up. This increases the resistance of the PPTC element, which halts the flow of current and trips the fuse. The resulting low current flow prevents the equipment from being damaged. After the overload is removed, the PPTC element cools off and its resistance decreases, allowing the fuse to reset and the current to flow again.

Advantages

PTC Resettable Fuses offer many advantages over traditional fuses. They are easily reset and do not require replacement, reducing maintenance costs and eliminating the need to keep spare fuses on hand. They are also self-resetting and can be used for multiple overloads, meaning they can handle more current than conventional fuses. Additionally, PTC Resettable Fuses are available in a wide range of current ratings, making them suitable for a variety of applications.

Disadvantages

PTC Resettable Fuses have several disadvantages, as well. Like other types of fuses, they cannot handle overloads that exceed their current rating. Additionally, they can generate heat and cause damage to the equipment if they are overloaded too often or for extended periods. They are also more expensive than traditional fuses and may require additional wiring and installation time.

Conclusion

The 0ZRA1200FF1A is an example of a PTC Resettable Fuse. They are designed to protect against overcurrents and short circuits and are commonly used in consumer products and industrial equipment. PTC Resettable Fuses offer many advantages over traditional fuses, such as easier resetting and multiple overload protection. However, they also have some drawbacks, including higher cost and the potential for heat generation.

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