PTCCL05H181DBE

Resistance - 25°C (Typ):	13 Ohms
Approvals:	UR
Lead Spacing:	0.197" (5.00mm)
Thickness (Max):	--
Height - Seated (Max):	0.394" (10.00mm)
Size / Dimension:	0.197" Dia x 0.157" W (5.00mm x 4.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Series:	PTCCL
Current - Trip (It):	270mA
Current - Hold (Ih) (Max):	180mA
Current - Max:	1.7A
Voltage - Max:	30V
Type:	Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

PTC resettable fuses are a relatively new technology and are fast becoming the preferred choice of protection devices for a wide range of electronic products thanks to their superior performance and increased safety benefits. The PTCCL05H181DBE is a classic example of a resettable fuse, offering optimal performance at a minimal size. In this article, we discuss the application field and working principle of this product, as well as compare it to other types of fuses.

What is a resettable fuse

Before we look at the PTCCL05H181DBE, let us first consider what a resettable fuse is. A resettable fuse is an electronic circuit breaker which can open and close its circuit multiple times in response to surges or spikes in current. This type of fuse is made up of a polymeric positive temperature coefficient (PPTC) element and one or two low thermal impedance conductors, such as copper. The PPTC element acts as a bidirectional temperature switch. When straight current flows through it, the PPTC conducts electricity. However, when the current overloads, the PPTC element will quickly heat up, which causes it to expand and then breaks its conducting network. This stops the current from flowing and thus protects any downstream electronics from overcurrent conditions.

The PTCCL05H181DBE

The PTCCL05H181DBE is an example of a PTC resettable fuse, which offers superior performance in comparison to other types of fuses. This particular device is equipped with a shunt resistance of 0.05 Ohms, and its RoHS-compliant design contains no cadmium, lead, or halogen.Because the PTCCL05H181DBE is a PTC resettable fuse, its operation is automatic. Once the device senses an overcurrent condition, it will open its circuit in order to protect any downstream electronics. This process is known as tripping, and it occurs quickly in order to minimize any potential damage to sensitive components.Once the current flow has dropped to a safe level, the PTC element will cool and contract. This enables the circuit to reset itself and return to a state of normalcy, allowing electricity to flow freely again. This is why PTC resettable fuses are often referred to as self-resetting fuses, since they don’t require human intervention or power interruption in order to reset.

Applications of the PTCCL05H181DBE

The PTCCL05H181DBE is suitable for a wide range of applications, such as protecting power supplies, electrical charges in battery-operated devices, automotive systems, consumer electronics, and portable medical devices. It can also be used as an overcurrent protection device for circuits which encounter frequent surges, and it can also be employed as a form of short circuit protection.

Benefits of the PTCCL05H181DBE

In comparison to other types of fuses, resettable fuses such as the PTCCL05H181DBE offer a number of key benefits. Firstly, they are much more resilient and reliable than traditional fuses, since they can be triggered multiple times without failing. This makes them ideal for applications which require frequent overcurrent detection and resetting.Furthermore, resettable fuses are much safer than standard types, since they don’t require the user to physically interrupt the current flow in order to reset the circuit. This ensures that there is no risk of electric shock, saving workers, equipment, and the environment from potential hazards. Finally, resettable fuses are much smaller in size than traditional types, which helps to save space and improve the overall design of the product.

Conclusion

The PTCCL05H181DBE is a classic example of a PTC resettable fuse. Thanks to its small size and automatic operation, it is an ideal choice for a range of applications which require reliable overcurrent protection. Its RoHS-compliant design ensures that it is safe to use, and it also offers a number of key benefits in comparison to other types of fuses.

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