PTGL05AS100K4B51B0

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PTC resettable fuses, also called positive temperature coefficient (PTC) fuses, polymeric positive temperature coefficient (PPTC) fuses, conductive polymer PTC fuses, or thermistor fuses, are self-resetting overcurrent protection devices. They are increasingly used in consumer electronics, industrial, medical, and automotive circuits due to their performance, safety, and size advantages. PTGL05AS100K4B51B0 is a typical example of PTC resettable fuses, suitable for application in a variety of device types.

PTGL05AS100K4B51B0 Operating Principle

The PTGL05AS100K4B51B0 is a bidirectional two-terminal PTC overcurrent protection device used to safeguard high-voltage electronic systems. It consists of a proprietary conductive polymer material layer between two electrically conductive end electrodes. When operated normally, the conductive polymer layer has a low resistance, which allows steady current to travel through it. When the device is overloaded, the temperature of the conductor rises, which causes the conductive polymer to become more resistive; the resistance can be increased up to 100K ohms. This stops the current flow and effectively protects the device from overcurrent.

PTGL05AS100K4B51B0 Application

Typical applications of the PTGL05AS100K4B51B0 resettable fuses include personal digital assistants (PDAs), laptops, an alternator rectifier diode, computer boards, power supplies, LCD TVs, UPS systems, electric tools, and many other high voltage electronic systems. In addition, this device is particularly suitable for use in applications with limited space, such as laptops and other portable electronic devices. This is due to the fact that the PTGL05AS100K4B51B0 is only 1.2 mm thick, and requires no extra mounting space.

The resettable fuse also enjoys several advantages compared to traditional fuse-based protection systems. The PTGL05AS100K4B51B0 offers fast, reliable overcurrent protection and is able to reset itself to normal operation after a current overload event. This helps protect the device from secondary damage due to a short-circuit caused by overcurrent protection. In addition, the fuse does not require external actions such as replacing the fuse or resetting a circuit breaker to restore normal operation. These features make the resettable fuse a more suitable choice for portable and other high-voltage applications.

Conclusion

The PTGL05AS100K4B51B0 resettable fuse is a two-terminal, bidirectional device for overcurrent protection. The fuse is primarily used in consumer electronics, industrial, medical, and automotive circuits due to its high performance, safety, and size advantages. It offers fast and reliable protection, as well as the ability to reset itself after a current overload event. The fuse is also particularly suitable for applications with limited space due to its thin form factor.

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