The 1206SFS350F is a surface mount resettable fuse (PPTC) manufactured by Tyco Electronics. These devices are designed to protect electronic circuits from overcurrent conditions. When a fault occurs, the device heats up and its resistance increases dramatically, limiting the current flow. Once the fault is cleared and power is removed, the device cools down and resets to its original low-resistance state.

Applications

• USB port protection
• Overcurrent protection in portable electronics
• Security systems
• Industrial control equipment
• Battery chargers

Features

• Resettable: Automatically resets after the overcurrent condition is removed.
• Surface Mount Package: Compact 1206 package for automated assembly.
• Fast Trip Time: Rapid response to overcurrent events.
• Low Resistance: Minimal impact on circuit performance under normal operating conditions.
• Agency Approvals: UL, CSA, and TUV approvals ensure compliance with safety standards.

Benefits

• Improved Circuit Protection: Prevents damage to sensitive electronic components from overcurrent conditions.
• Reduced Downtime: Resettable functionality eliminates the need to replace blown fuses.
• Enhanced Reliability: Provides reliable overcurrent protection in a compact package.
• Simplified Maintenance: Eliminates the need for manual fuse replacement.
• Cost-Effective Solution: Reduces maintenance costs and improves system reliability.

Additional Details

The 1206SFS350F has a hold current of 350mA and a trip current significantly higher. It is designed to operate over a wide temperature range. The device’s small size and surface mount package make it suitable for high-density circuit boards. It's important to consult the datasheet for detailed electrical characteristics and application guidelines. Proper placement and thermal management are essential for optimal performance.