The ASMD100F-2 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 by limiting the flow of current during a fault. They are commonly used in various electronic applications to enhance safety and reliability.

Applications:

• USB Port Protection: Protecting USB ports in computers, peripherals, and chargers from overcurrent faults.
• General Electronics Protection: Providing overcurrent protection in a wide range of electronic devices, including consumer electronics, industrial equipment, and telecommunications systems.
• Automotive Electronics: Protecting sensitive electronic components in automotive applications, such as control units and sensor circuits.
• Power Supply Protection: Protecting power supplies from overcurrent conditions caused by load faults.
• Battery Packs: Providing overcurrent protection in battery packs for portable devices.

Features:

• Resettable: Automatically resets after the fault is removed and the device cools down.
• Compact Size: Small form factor allows for use in space-constrained applications.
• Fast Trip Time: Quickly responds to overcurrent conditions, limiting the amount of fault current.
• Low Resistance: Maintains low resistance during normal operation, minimizing power loss.
• RoHS Compliant: Compliant with Restriction of Hazardous Substances (RoHS) directives.
• Halogen-Free: Free of halogenated materials, meeting environmental standards.

Benefits:

• Circuit Protection: Protects electronic circuits from damage caused by overcurrent faults.
• Improved Reliability: Enhances the reliability of electronic devices by preventing component failures due to overcurrent conditions.
• Reduced Downtime: Minimizes downtime by automatically resetting after a fault is cleared.
• Cost Savings: Reduces the need for replacing blown fuses, leading to cost savings.
• Enhanced Safety: Improves safety by limiting the flow of current during fault conditions, preventing potential hazards.

Additional Details:

The ASMD100F-2 has a hold current (Ih) of 1.0A and a trip current (It) of 2.0A. The maximum voltage rating is 6VDC. The device's operating temperature range is typically from -40°C to +85°C. It is surface-mountable, making it easy to integrate into modern PCB designs. The device conforms to industry standards for safety and performance, providing a reliable overcurrent protection solution.