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PTC Resettable Fuses

PTC (positive temperature coefficient) resettable fuses are electronic components intended to protect a wide range of electronic equipment from transient current and prolonged overcurrents. PTC resettable fuses employ a special type of fuse element that becomes resistive when excessive current is present. The increased resistance results in the reduction of current flow, thus protecting the circuit from possible damage.

1206L110/16WR Application Field and Working Principle

The 1206L110/16WR is a small resettable fuse manufactured by Bourns. This device operates at a rated voltage of 16V AC/DC and has an operating temperature range of -40 to +85^oC. It has a maximum current rating of 110A, and is designed for applications such as automotive, industrial control, ITE/medical, and white goods.

The 1206L110/16WR has a polymeric positive temperature coefficient (PPTC) element, which consists of a polymer film containing small particles of carbon and metal(s). When the device is exposed to an overload current, the heat generated by the current causes the device to become resistive, thus limiting the current flow and protecting the circuit from possible damage. Once the overload has been removed, the device cools down and resumes its original low-resistance state.

The 1206L110/16WR also has a number of other features, including a wide operating temperature range and a high-temperature capability up to 125^oC. It also has a low self-heating capability, which helps to reduce system losses, resulting in improved reliability and efficient operation. Additionally, the 1206L110/16WR has an excellent system-level thermal cycling capability, which enables it to withstand high inrush currents.

Finally, the 1206L110/16WR has a high dielectric strength of 79.3V/mil, a low maximum voltage rating of 3V, and a maximum power rating of 6V, making it suitable for a wide range of applications.

Conclusion

PTC resettable fuses such as the 1206L110/16WR are widely used in a wide variety of applications due to their excellent reliability, low voltage and power requirements, and their ability to withstand short-term overloads. Furthermore, the device\'s wide operating temperature range, high thermal cycling capability, and low self-heating capability all provide users with reliable protection in a variety of applications.

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