1206L020YR

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PTC resettable fuses are electronic components designed to protect electronic circuits and devices from over current faults. 1206L020YR is a type of resettable fuse with a wide range of applications. This article explores the application field and working principle of the 1206L020YR.

Application Field

The 1206L020YR is a radial leaded PTC resettable fuse designed for surface mounting applications. It has a rated current of 20A, a voltage rating of 32V DC, and a hold current of 0.20A. It utilizes a flame retardant polyester material and is RoHS compliant, making it suitable for applications such as automotive, electrical and electronic device, consumer product, telecommunications, and more.

Furthermore, 1206L020YR is optimized for use at high temperatures and has an operating temperature range of -40°C to 125°C. It is UL recognized and compliant with IEC 60950, making it suitable for applications in the IT and industrial sectors as well.

Working Principle

The 1206L020YR operation is based on a positive temperature coefficient (PTC) thermistor. It works by increasing in resistance when the current passing through it exceeds its rated trip current. This increase in resistance causes enough heat to be generated, tripping the PTC and cutting off the current flow. Once the current is brought below the reset current, the PTC cools and the resistance decreases, allowing the current to flow again. This cycle is repeated whenever the current trips the PTC.

An important aspect of the 1206L020YR is its low power consumption. It does not require any additional power and therefore does not increase the total power usage of the equipment. Furthermore, this resettable fuse does not require regular maintenance or replacements, making it a suitable choice for applications in harsh or difficult to reach environments.

In addition, the 1206L020YR has a UL temperature limit of 260°C and a time-delay feature that prevents false tripping. The time-delay feature allows the fuse to withstanding brief power surges without tripping. Lastly, the 1206L020YR has a relatively wide current range, making it suitable for a variety of applications.

In conclusion, the 1206L020YR is a PTC resettable fuse designed for surface mounting applications. It is RoHS compliant, UL recognized, and has low power consumption. It is suitable for a wide range of applications due to its high temperature limit and time-delay feature.

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