Resistance - 25°C (Typ):	1.3 Ohms
Approvals:	UR
Lead Spacing:	0.197" (5.00mm)
Thickness (Max):	--
Height - Seated (Max):	1.004" (25.50mm)
Size / Dimension:	0.807" Dia x 0.197" W (20.50mm x 5.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	0°C ~ 70°C
Series:	PTCCL
Current - Trip (It):	1.5A
Current - Hold (Ih) (Max):	1A
Current - Max:	13A
Voltage - Max:	145V
Type:	Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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PTC Resettable Fuses – PTCCL21H102FBE Application Field and Working Principle

PTC (positive temperature coefficient) resettable fuses are a specialized type of fuse that is designed to automatically reset itself after the overcurrent event has occurred. PTCCL21H102FBE is a commonly used PTC resettable fuse that has been designed to protect general-purpose and low-power electrical and electronic devices from overcurrent, overload, and short circuit conditions.

Advantages of PTCCL21H102FBE

PTCCL21H102FBE offers a number of advantages when compared to traditional mechanically actuated fuses. As mentioned earlier, it has the capability to automatically reset itself after an overcurrent event, eliminating the need for costly and time-consuming manual repair and replacement of the fuse. Moreover, the reset capability also saves time and money by eliminating downtime due to the overcurrent event, as well as by reducing the litigation process associated with insurance claims for damages caused by the incident. On top of that, due to its low power rating, PTCCL21H102FBE is able to provide exceptional protection in low-power applications such as white goods, domestic appliances, electronic toys and games, and other consumer electronics.

Applications of PTCCL21H102FBE

PTCCL21H102FBE is mainly used in low-power electrical and electronic applications, where it is mainly tasked to provide protection to the device from overcurrent and overload conditions. This device is suitable for use in applications such as consumer electronics, domestic appliances, power supplies, computer systems, GPS devices, digital cameras, automotive electronics, and others similar applications. It is also perfect for use in music system wiring, as it has the ability to withstand short duration transients.

Working Principle

The PTCCL21H102FBE is a self-resetting fuse with a positive temperature coefficient (PTC) temperature-sensitive element. This element is made of a piece of highly conductive material, such as copper, which is subjected to an electric current. As the current level increases above the rated current, the temperature of the PTC element rises exponentially, reaching a state where the electrical resistance of the material becomes too high for the current to continue flowing. As a result, the fuse blows, cutting off the current being supplied to the protected circuit.Once the overcurrent event has subsided, the PTC element cools down and returns to its original state, restoring the current flow and resetting the fuse. This entire process is automated and requires no manual involvement, making it ideal for use in applications where a quick response time and convenience is required.

Conclusion

The PTCCL21H102FBE is a specialized type of PTC resettable fuse that is designed to provide overcurrent and overload protection for low-power electrical and electronic appliances. This device is able to reset itself after a current event, eliminating the need for costly and time-consuming manual repair and replacement. Furthermore, its low power rating makes it ideal for use in consumer electronics, domestic appliances, power supplies, automotive electronics, and other similar applications. Its working principle revolves around the concept of positive temperature coefficient, whereby the resistance of a highly conductive material is made too high for the current to continue flowing, thus cutting off the surge and resetting itself after the event.

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