PTC Resettable Fuses

PTC resettable fuses, also known as polymeric positive temperature coefficient fuses, are a type of circuit protection device that automatically resets itself after a fault condition is cleared. These fuses are commonly used in electronic circuits to protect against overcurrent and short circuit events.

What is PTC Resettable Fuse?

A PTC resettable fuse is made of a polymer material that has a high resistance at normal operating temperatures. When an overcurrent or short circuit event occurs, the temperature of the fuse increases, causing the polymer material to expand and increase its resistance. This effectively limits the current flow through the circuit, protecting the components from damage.

Where is it Used?

PTC resettable fuses are commonly used in a wide range of electronic devices and systems, including computers, telecommunication equipment, automotive electronics, and consumer electronics. They are also used in industrial applications such as power supplies, motor controls, and battery protection circuits.

Applications in Industries

PTC resettable fuses are widely used in various industries for circuit protection. In the automotive industry, they are used in battery management systems, engine control units, and airbag systems. In the telecommunications industry, they are used in network equipment, routers, and switches. In the consumer electronics industry, they are used in smartphones, tablets, and laptops.

Overall, PTC resettable fuses provide reliable and cost-effective protection against overcurrent and short circuit events in electronic circuits. Their self-resetting feature eliminates the need for manual replacement, making them a popular choice for many applications.