The MF-NSMF012 is a surface-mount resettable fuse, also known as a Polymeric Positive Temperature Coefficient (PPTC) device, manufactured by Bourns Inc. It protects electronic circuits from overcurrent conditions. When an overcurrent event occurs, the PPTC device heats up and its resistance increases dramatically, limiting the current flow and protecting the circuit. Once the fault is removed and power is cycled, the device cools down and returns to its low-resistance state, allowing the circuit to resume normal operation.

Applications

• USB Ports: Used to protect USB ports from overcurrent conditions caused by faulty devices or shorts.
• Portable Electronics: Employed in mobile phones, tablets, and other portable devices to protect sensitive circuits.
• Battery Packs: Incorporated into battery packs to protect against overcurrent and short-circuit conditions.
• Gaming Consoles: Used in gaming consoles to protect against overcurrent conditions in power supplies and peripheral connections.
• Industrial Equipment: Found in industrial control systems to protect against overcurrent faults.

Features

• Resettable: Automatically resets after the overcurrent condition is removed.
• Surface Mount: Designed for surface mount assembly.
• Compact Size: Small form factor for space-constrained applications.
• Fast Trip Time: Quickly responds to overcurrent events.
• Low Resistance: Offers low resistance during normal operation.
• RoHS Compliant: Complies with environmental regulations.

Benefits

• Circuit Protection: Protects electronic circuits from damage caused by overcurrent conditions.
• Reduced Downtime: Automatically resets, reducing downtime compared to traditional fuses.
• Space Saving: Compact size allows for use in small devices.
• Improved Reliability: Provides reliable overcurrent protection.
• Cost-Effective: Eliminates the need to replace fuses after each overcurrent event.

Additional Details

The MF-NSMF012 has a hold current of 0.12A and a trip current of 0.24A. The maximum voltage rating is typically 6V to 30V, depending on the specific series. It is designed to operate over a wide temperature range. The surface mount package simplifies assembly and reduces board space. PPTC devices are widely used in electronic circuits to provide reliable and resettable overcurrent protection. The low profile of the MF-NSMF012 makes it ideal for portable devices and other applications where space is limited.