PTGL04AS100K2N51B0

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PTC Resettable Fuses, or commonly called PPTCs, are protective polymeric positive temperature coefficient devices that exist in a variety of sizes, shapes, and compositions. They can protect against various conditions like overcurrent, overvoltage, and over-temperature, and are most commonly used for their resettable nature. They provide unlimited-lifetime, short circuit protection and resettable disconnection. Their main purpose is to protect electronic equipment from accidental overload.

PTGL04AS100K2N51B0 is one such device, and is used for overcurrent protection on mobile phones, such as Apple iPhones. It is a 4A rated device with a rated operating voltage of 6V DC and rated Operating Temperature range of -40 to 85 degrees Celsius. Its size is 4.4 mm x 4.4 mm x 0.8 mm, with a total length of 5 mm which is suitable for small electronics. It is a self-resetting fuse, meaning it will go into a reset state after tripping, allowing the device that was protected to start working again. In other words, it will tripped and turn off the device, but will reset itself after the tripping.

So how does it work? Well, the PTGL04AS100K2N51B0 has two components: an electro-thermal element and a semiconductor element. In normal current operation, the semiconductor element of the device prevents any current from passing through the electro-thermal element. This maintains the normal operation of the device. However, when the current exceeds the rated value, the electro-thermal element will heat up and the device will trip, interrupting the current. When the current drops to the normal level, the device will cool down and reset itself, allowing the device to start working again.

The PTGL04AS100K2N51B0 is unique in that it offers low resistance, meaning it won’t heat up quickly during normal current operation. It also provides precisely resettable protection in small spaces, making it ideal for use in mobile phones and other small electronics. The device is rated for use on 6V DC systems, and its fast switching time makes it especially suited for applications that require fast reaction times, such as power switching of a battery charger.

Overall, the PTGL04AS100K2N51B0 is a highly reliable and versatile PTC fuse, offering highly protective and resettable features in a small form factor. It is best suited for applications such as overcurrent protection in mobile phones, battery chargers, and other small electronic devices.

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