YM120D200N200

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PTC Resettable Fuses: YM120D200N200 application field and working principle

PTC, or Positive Temperature Coefficient resettable fuses, are electrical devices which provide a measure of protection against electrical overload by disconnecting the circuit when the current flow reaches a certain limit. This is done by the device\'s "trip" function, which is activated when current flow exceeds a fixed threshold. This threshold is determined by the physical characteristics of the device and is usually programmed at the factory. When an overload occurs, the fuse will "trip" and disconnect the circuit until the circuit cools, allowing the fuse to reset and the circuit to be reconnected.

The YM120D200N200 is a specific model of PTC Resettable Fuses that is widely used in a variety of applications. This fuse is typically used in applications requiring high current protection, such as switching power supplies, motor control, consumer electronic devices, automotive accessories, and AC/DC power supplies. It is designed to work in both 12 and 24 Volt systems and has a wide range of operating temperatures (-40°C to +125°C). This fuse can easily be integrated into circuits where space is a factor. The YM120D200N200 fuse also offers protection against sudden power surges and overloads, which can damage equipment and lead to costly repairs.

The YM120D200N200 fuse\'s working principle revolves around a symmetric PTC material. When the current through the fuse exceeds the rated trip current, the PTC material\'s resistance increases linearly. This increase in resistance causes the voltage drop across the fuse to increase, which in turn triggers the fuse\'s trip function. Once the overload is removed, the PTC material\'s resistance decreases and the voltage drop across the fuse decreases, allowing the fuse to reset itself. The reset current is usually lower than the trip current, and this is what allows the fuse to be reset and the circuit to be reconnected.

The YM120D200N200 PTC Resettable Fuse has a wide range of applications and is suitable for a variety of electrical and electronic circuits. It provides reliable protection against sudden power surges and overloads, making it an ideal choice for systems that must remain operational over long periods of time. Additionally, its small size and lightweight design make it an ideal choice for applications with space constraints. With its high current protection rating and linear resistance characteristic, the YM120D200N200 is a popular choice for a variety of current protection applications.

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