PTGL07BD470N3B51A0

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PTGL07BD470N3B51A0 PTC Resettable Fuses - Application Field and Working Principle

PTC stands for Positive Temperature Coefficient, and a PTC Resettable Fuse, is a self-resetting, non-destructive, thermal fuse. This type of fuse will reset itself after it trips, allowing continued operation. They are designed for use in a variety of devices and applications where over-current protection is necessary.

PTGL07BD470N3B51A0 PTC resettable fuse is a self-resetting, non-destructive, thermal fuse designed for use in a variety of over-current protection applications. The PTGL07BD470N3B51A0 is a high performance PTC resettable fuse with a wide range of operating currents over a temperature range of -55C to +125C. This PTC resettable fuse is a lightweight, compact alternative to conventional thermal fuses.

The PTGL07BD470N3B51A0\'s wide operating temperature range makes it suitable for a variety of applications, such as protecting the main power path of consumer electronic products, LED lighting circuits, solar energy systems, DC-DC converters, and AC-DC converters. It is also suitable for applications requiring multiple resets such as treadmill application, greenhouse HVAC systems, and resistive load applications. The PTGL07BD470N3B51A0 meets UL standards for self-resetting functionality.

The working principle of PTGL07BD470N3B51A0 is based on a PTC thermistor. A PTC thermistor is a two-terminal device made of semiconductor material. PTC thermistors have a positive temperature coefficient, meaning that when the temperature of the device increases, its resistance will also increase. In a PTC resettable fuse, the two terminals are connected in series along the same path as the probable current. When the current increases to an unsafe level, the PTC thermistor heats up and acts as a resistor, limiting the flow of current. As the current is limited, the resulting heat will cause the PTC thermistor to cool back down and reset. This process will happen every time the current exceeds the fuse’s threshold. To ensure safety, the PTGL07BD470N3B51A0 is equipped with a back-up fuse that cuts off power beyond its predetermined threshold.

In conclusion, PTGL07BD470N3B51A0 PTC resettable fuse is a lightweight, compact, and robust alternative to traditional thermal fuses. It is suitable for a variety of applications, and its wide operating temperature range makes it a reliable solution for over-current protection. Thanks to the working principle based on the PTC thermistor, the PTGL07BD470N3B51A0 will reset itself after it trips, allowing continued operation. Additionally, it meets UL standards for self-resetting functionality. This makes the PTGL07BD470N3B51A0 an ideal choice for a variety of over-current protection applications.

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