The Littelfuse SMD1210P110TFT is a PolySwitch resettable fuse designed for surface mounting. It's engineered to provide overcurrent protection in a variety of electronic applications. As a member of the PolySwitch family, it uses PPTC (Polymeric Positive Temperature Coefficient) technology for reliable and predictable circuit protection.

Applications:

• USB ports: Protection for USB devices and hosts.
• Power supply protection: Prevents damage from overcurrent conditions in power supplies.
• Portable electronics: Used in smartphones, tablets, and other portable devices.
• Game consoles: Protects sensitive components from electrical faults.
• General electronic devices: Suitable for various applications requiring overcurrent protection.

Features:

• Surface mount device (SMD): Designed for easy and efficient automated assembly.
• 1210 package size: Compact footprint suitable for space-constrained applications.
• Resettable fuse: Automatically resets after the overcurrent condition is removed.
• Fast trip time: Provides quick response to overcurrent events.
• Low resistance: Minimal impact on circuit performance during normal operation.
• Agency approvals: UL, CSA, and TUV recognized for safety and reliability.

Benefits:

• Overcurrent protection: Protects electronic circuits from damage due to excessive current.
• Reduced warranty claims: Improves product reliability and reduces returns due to electrical faults.
• Increased product lifespan: Safeguards sensitive components, extending the life of the product.
• Simplified maintenance: Eliminates the need for manual fuse replacement.
• Minimized downtime: Quick recovery after a fault event allows for continuous operation.

Additional Details:

The SMD1210P110TFT has a hold current (IHOLD) of 1.1A and a trip current (ITRIP) of 2.2A. The maximum voltage rating is 30V. The operating temperature range is -40°C to +85°C. The 1210 package indicates the physical dimensions of the device: 12 (length) x 10 (width) in mils. Littelfuse PolySwitch devices utilize a polymeric material that changes resistance based on temperature caused by overcurrent. During an overcurrent event, the device's resistance increases rapidly, limiting current flow and protecting the circuit. Once the fault is cleared, the device cools, and its resistance returns to a low level, allowing the circuit to resume normal operation. The 'TFT' suffix typically indicates tape and reel packaging, as well as specific electrical characteristics or testing parameters.