1210L380SLYR

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PTC Resettable Fuses are over-current protection devices that activate when an over-current condition is detected. The 1210L380SLYR device is a leaded version of PTC Resettable Fuses that is commonly used in the protection of small electronic circuits. The device works by opening a circuit when the current through it reaches a certain level. Once the over-current condition is cleared, the device will automatically reset itself and allow the current to flow again.

Application Fields

The 1210L380SLYR device has a wide range of applications. It is used in many portable electronics, such as cameras, cell phones, MP3 players, and laptops, where sensitive components need to be protected from high voltage or current surges. It is also used in low voltage DC circuits, such as DC motor controllers and microcontrollers, to detect short circuits and prevent damage to components. Additionally, these devices have been used as protection in automotive circuits such as airbags, power windows, keyless entry, and radio receivers.

Working Principle

The 1210L380SLYR device is a polymeric positive temperature coefficient (PPTC) type PTC Resettable Fuse. When current flows through the device, it creates heat due to resistance, which causes the material to swell. This swelling action reduces the flow of current, thus preventing damage to sensitive components in the circuit. When the current level drops below the threshold, the material cools and shrinks, allowing normal current flow to resume.

The device has a voltage rating of 125V AC and is available in two sizes: 1210 and 1812. The maximum current carrying capacity is 380mA and the maximum peak surge current is 5A. It has a short circuit and over-temperature protection, and is UL and CSA listed.

The 1210L380SLYR is highly durable and has a very high resetting cycles life, which can range from 10,000 cycles at room temperature to 1,000 cycles at −40 °C. It is also very reliable and can often survive multiple over-current events without any damage.

In summary, the 1210L380SLYR PTC Resettable Fuse is a highly reliable over-current protection device commonly used in a wide range of applications. Its ability to automatically reset itself after an over-current event helps to protect sensitive components in a circuit and significantly extend the life of the device.

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