MINISMDC125F/16-2

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PTC Resettable Fuses are a type of fuse designed to protect electrical circuits from overcurrent. They are also known as polyfuse, polyswitch or Polymeric Positive Temperature Coefficient (PPTC) devices. The MINISMDC125F/16-2 is a member of this class of fuses, specifically designed for higher voltage applications.

The MINISMDC125F/16-2 is designed to protect 125V circuits carrying up to 16A of continuous current. It has an operating temperature range of -40 to +85°C, a stored energy range of 0.5J to 2.5J and a power dissipation rating of 1W.

The MINISMDC125F/16-2 has a variety of application fields, including automotive, consumer electronics, communication, DC-DC converters, and lighting fixtures. It can be used as a current, voltage, or even temperature limiter, as well as a circuit breaker for high-current circuits.

The working principle of the MINISMDC125F/16-2 is based on the PTC (Positive Temperature Coefficient) characteristic of a solid material, which is connected in series with the protected circuits. When a current flow through it, due to Joule’s law, it increases the temperature of the fuse, which in turn increases its resistance and limits the current. When the current decreases, the temperature drops and the resistance decreases, thus resetting the fuse and allowing the current to pass again.

In the event of an overcurrent or short-circuit condition, the PTC fuse element reaches a temperature where its resistance is too high to pass current. This then acts as a circuit breaker, limiting the current flow and thus protecting the circuit from damage. When the fault is removed, the fuse element cools down and the resistance decreases, allowing current to flow again.

In addition to providing circuit protection, the MINISMDC125F/16-2 can also be used in applications requiring controlled current. For example, it can be used in computers to provide current protection in case of a short-circuit, as well as to limit the amount of current for certain components, such as CPU or GPU.

The MINISMDC125F/16-2 is an ideal solution for applications requiring current or voltage limitation, circuit protection, and resetable fuses. Its operating temperature range, power dissipation, and stored energy ratings make it suitable for a wide range of high-voltage applications.

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