The 1812L200PRT is a resettable fuse, also known as a Polymeric Positive Temperature Coefficient (PPTC) device, manufactured by Littelfuse. These devices are designed to protect electronic circuits from overcurrent conditions. When an overcurrent event occurs, the PPTC device heats up and increases its resistance dramatically, limiting the current flow and protecting the circuit. Once the fault condition is removed and the device cools down, its resistance returns to a low value, allowing the circuit to resume normal operation. This specific part is a 2A rated device in an 1812 surface mount package.

Applications

• USB Ports: Protection of USB ports in computers, laptops, and other devices.
• Mobile Phones: Overcurrent protection in mobile phone charging circuits and battery management systems.
• Game Consoles: Protection of power input and output circuits in gaming consoles.
• Power Supplies: Overcurrent protection in power supplies for various electronic devices.
• General Electronics: Used in a wide range of electronic devices to protect against overcurrent conditions.

Features

• Resettable: Automatically resets after the overcurrent condition is removed.
• Surface Mount Package: Designed for easy and efficient assembly onto printed circuit boards.
• Fast Trip Time: Quickly responds to overcurrent events, limiting the amount of time the circuit is exposed to the fault.
• Low Resistance: Offers low resistance during normal operation, minimizing power loss.
• Compact Size: Small form factor allows for use in space-constrained applications.

Benefits

• Improved Circuit Protection: Provides reliable overcurrent protection for electronic circuits.
• Reduced Downtime: Eliminates the need to replace fuses after an overcurrent event.
• Lower Maintenance Costs: Reduces maintenance costs by eliminating the need to replace blown fuses.
• Enhanced Safety: Protects equipment and users from hazardous overcurrent conditions.
• Cost-Effective Protection: Provides a cost-effective solution for overcurrent protection.

Additional Details

The 1812L200PRT has a hold current of 2.0A and a trip current that is typically higher. The trip time depends on the magnitude of the overcurrent. It conforms to industry standards for resettable fuses. The 1812 package refers to the physical dimensions of the surface mount component.