SMD1812P050TFA

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PTC resettable fuses offer electronic components that are able to function as short-circuit protection and current-limiting devices in a variety of applications. These fuses offer more reliable over-current protection than conventional fuses. The SMD1812P050TFA PTC resettable fuse is an example of a fuse from this product family that offers many advantages and provides a number of features.

Technology

The SMD1812P050TFA PTC resettable fuse is a polymeric PTC, which is a type of self-regulating fuse. It features a polymeric material that regulates the flow of current depending on the temperature. The technology works by increasing its resistance to incremental rises in temperature. This effect is caused by exponential increases in resistance, which is known as positive temperature coefficient. As a result, a moderate increase in current produces a great increase in temperature, which effectively limits and regulates the current at a predetermined level.

Features and Advantages

The SMD1812P050TFA PTC Resettable Fuse offers a number of features and advantages relative to other over-current protection devices. It is a small, low profile device that is ideal for space-constrained applications. Its design is highly reliable and includes an overcurrent protection circuit that trips at a predetermined current. It can be reset easily and quickly, which minimizes downtime in the event of an over-current condition. Additionally, its polymeric design eliminates the chances of false triggering caused by noise or high transient currents.

Applications

The SMD1812P050TFA PTC Resettable Fuse is ideal for a variety of applications. It can be used in devices that require short-circuit and overcurrent protection, such as power supplies, electronic equipment, battery-operated systems, industrial appliances, and automobile and automotive components. It can also be used in LED lighting applications, as PTC products are well-suited for low current consumption devices due to their high surge capabilities.

Work Principle

The SMD1812P050TFA PTC Resettable Fuse is designed to work in a two-stage process. When the current reaches a predetermined level, a thermal shutdown mechanism is tripped that raises the operating temperature, which then increases the resistance dramatically, limiting the current. This then causes the current to drop to a safe level and the device will reset itself when the temperature returns to normal levels. As a result, the device is able to provide effective and reliable circuit protection while allowing for quick and easy resetting.

The SMD1812P050TFA PTC Resettable Fuse is a reliable and cost-effective solution for protecting circuits from over-current conditions. It is a highly durable device that offers many advantages over other over-current protection devices. Its small size and low profile makes it well suited for space-constrained applications and its polymeric design allows for reliable and effective protection without false triggering.

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