2322 661 97203 Circuit Protection

Resistance - 25°C (Typ):	10 Ohms
Approvals:	--
Lead Spacing:	--
Thickness (Max):	0.142" (3.60mm)
Height - Seated (Max):	--
Size / Dimension:	0.283" L x 0.394" W (7.20mm x 10.00mm)
Package / Case:	2-SMD
Mounting Type:	Surface Mount
Ratings:	--
Operating Temperature:	--
Series:	--
Time to Trip:	3s
Current - Trip (It):	250mA
Current - Hold (Ih) (Max):	150mA
Voltage - Max:	300V
Type:	Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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PTC Resettable Fuses Application Field and Working Principle

PTC resettable fuses are becoming increasingly commonplace in a variety of applications, but what is a PTC resettable fuse and how does it work? PTC resettable fuses are a type of electrical protection device which can provide overcurrent protection for circuits without the need for user-replaceable fuse elements. PTC resettable fuses are typically composed of a positive temperature coefficient (PTC) element which is designed to provide electrical current limitation.The basic operating principle of a PTC resettable fuse is simple and effective. When current passing through the PTC element exceeds a pre-determined limit, the PTC element will increase in temperature, causing the metal source contact to expand and reduce the current carrying capacity of the device. Once the current reduction threshold has been reached, the device will remain in a current limited state until the temperature of the PTC temperature decreases, or any current draw is reduced. PTC resettable fuses can provide electronic device protection in a variety of applications, including industrial, HVAC, automotive, and safety systems.PTC resettable fuses can be found in a variety of applications, due to their versatile design and low cost. PTC resettable fusess are typically available in two common configurations, current limited and thermal limited. Current limited types can provide protection against overcurrents, while thermal limited types provide protection against temperature rises. In addition, some types of PTC resettable fuses are available with integrated safety systems and features, allowing for additional protection of the device or circuit.With a wide operating temperature range, PTC resettable fuses can be used in locations where temperatures often exceed the traditional operating temperature range of most traditional fuse products. Because of their versatile design, PTC resettable fuses can be used in both high temperature and low temperature applications. This offers circuit designers more flexibility and cost savings by allowing the use of multiple fuse products in a single application.PTC resettable fuses also have the added benefit of reducing the amount of maintenance needed during operation. Unlike traditional fuse products, there is no need to replace the actual fuse element, which can save time and money in the long run. Rather than having to manually measure and verify current or temperature thresholds, many PTC resettable fuses offer automatic resetting, which will save time and effort, and reduce the possibility of user error.In addition to providing overcurrent and temperature protection, PTC resettable fuses also offer additional protection features such as surge protection, protection against short-circuits, and protection against static discharge. This makes PTC resettable fuses a viable alternative to traditional fuse products for circuit designers who require additional protection features in their circuits.Overall, PTC resettable fuses offer a cost effective solution for providing electrical protection, and offer a wide variety of protection options. By providing overcurrent and temperature protection, PTC resettable fuses can help to reduce the cost of system maintenance, and provide circuit designers with more flexibility and protection in their circuit designs.

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