PTCCL07H171FTE

Resistance - 25°C (Typ):	19 Ohms
Approvals:	UR
Lead Spacing:	0.197" (5.00mm)
Thickness (Max):	--
Height - Seated (Max):	0.472" (12.00mm)
Size / Dimension:	0.276" Dia x 0.197" L (7.00mm x 5.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	0°C ~ 70°C
Series:	PTCCL
Current - Trip (It):	255mA
Current - Hold (Ih) (Max):	170mA
Current - Max:	1A
Voltage - Max:	145V
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Part Status:	Obsolete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 and the PTCCL07H171FTE

PTC (positive temperature coefficient) resettable fuses are a type of self-resetting overcurrent protection device designed to protect electronic circuits from excessive current. These devices are used in a variety of applications, such as AC/DC converters, power supplies, motor controllers, and many other electronic devices. In this article, we will discuss the application field and working principle of the PTCCL07H171FTE PTC resettable fuse.

Applications of the PTCCL07H171FTE

The PTCCL07H171FTE PTC resettable fuse is suitable for use as an overcurrent protection device in a range of electronic circuits, such as AC/DC converters, power supplies, motor controllers, and many other electronic devices. It has a rated current rating of 150 amps, and its rated voltage is up to 28V. The device is also suitable for use in harsh environments, as it is UL 94V-0 flammability rated and IP67 sealed.

Working Principle of the PTCCL07H 171FTE

The PTCCL07H171FTE PTC resettable fuse is based on the Positive Temperature Coefficient (PTC) effect of certain materials, which cause the resistance of the material to increase as temperature increases. The device is constructed from a PTC thermistor, which is connected in series with a metal oxide varistor. The varistor acts as a voltage-dependent resistor, and when an overcurrent passes through the PTC thermistor, it will heat up and its resistance will increase. This increased resistance will reduce the current flow through the device, thus protecting the circuit. Once the temperature of the thermistor has returned to normal, the resistance will return to its original level and the fuse will be reset. This means that the device can be used repeatedly without needing to be replaced.

Advantages of the PTCCL07H 171FTE

The PTCCL07H171FTE PTC resettable fuse has several advantages over traditional fuses. Firstly, it has a maximum operating temperature of +175°C, which means that it can be used in environments where traditional fuses would be unable to operate correctly. Secondly, because the device can be reset, there is no need to replace the fuse after it has been used, thus reducing costs. Additionally, the device is also resistant to environmental conditions such as humidity and shock, making it ideal for use in harsh environments.

Conclusion

The PTCCL07H171FTE PTC resettable fuse is an ideal device for use in applications where an overcurrent protection device is needed. Its high current rating and robust construction make it suitable for use in a range of harsh environments. Additionally, its ability to reset itself means that it can be used repeatedly without needing to be replaced, thus reducing costs.

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