MICROSMD005-2

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PTC Resettable Fuses

PTC Resettable Fuses are devices consisting of a Positive Temperature Coefficient (PTC) Resistor. These fuses are able to reset themselves after detecting a surge in voltage or current, protecting the circuit from excess load or overvoltages. This type of fuse uses a special type of resistor known as a Positive Temperature Coefficient Resistor (PTCR). The resistor has a resistive value that decreases with increasing temperature, but will stay at the value until the temperature exceeds a certain threshold.

MICROSMD005-2 application field and working principle

Micro SMD005-2 is a 5Amp surface mount PTC resettable fuse. It offers a low voltage drop design and is designed to protect products such as LED drivers, PC systems and set top boxes. This device is also used in automotive and industrial applications.

The MICROSMD005-2 is activated by a current rise, which causes the PTC Resistor to heat up. At a predetermined temperature level, the resistance of the PTCR increases to a level that interrupts the current. If the current persists, the device will remain in a current-limited state, protecting the circuit from damage. Once the overload has cleared, the resistor cools and resumes its normal resistance value, allowing the circuit to continue its operation.

The MICROSMD005-2 can be connected in series with a power supply and connected to a load. This device can also be used to provide current limiting protection to components such as LEDs. The PTC Resistor offers a fast and reliable way to protect circuits as well as providing overload current protection.

In addition to current limiting, the MICROSMD005-2 also offers overvoltage protection. This is achieved by sensing a voltage beyond the predetermined limit and then diverting the excess voltage into a parallel path. This ensures that the equipment is not affected by overvoltage and the PTC Resistor is reset as soon as the overload or surge has cleared.

The MICROSMD005-2 is available in a variety of sizes to suit different circuit designs and applications. It is a reliable and cost-effective design that can be used to protect a range of electronic circuits. This device also offers long life and has a proven track record in applications such as automotive and industrial.

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