SMD0805P110TF 1.1A 0805 Resettable Fuse | Compact Overcurrent Protection

🚀 Overcurrent, short circuits, or abnormal loads frequently occur in USB interfaces, power banks, smart handheld terminals, and various consumer electronic devices, easily damaging critical components such as integrated circuits (ICs) and power management modules, affecting product reliability and lifespan. Overcurrent protection devices have become indispensable components in power supply and interface circuits.

➡️ What Are Overcurrent Protection Devices?

Overcurrent protection devices are components used to protect electronic circuits and equipment. Their main function is to limit or interrupt current when it exceeds a safe range, preventing damage to circuits and components due to excessive current. Simply put, they act like "safety valves" for circuits, ensuring that the circuit does not burn out under abnormal conditions. The SMD0805P110TF is a typical example of an overcurrent protection device.

➡️ What Is a SMD0805P110TF?

SMD0805P110TF is a PTC self-resetting fuse in a 0805 package, optimized for medium-to-high current applications. It quickly enters a protective state when overcurrent occurs and automatically recovers after the fault is cleared, effectively balancing circuit safety and system availability.

➡️ SMD0805P110TF Key Electrical Parameters

⭐ Typical Applications of SMD0805P110TF Resettable PTC Fuses

• USB power and charging interfaces
• Mobile power banks and battery-powered devices
• Smart handheld electronics
• Consumer and light industrial electronic equipment

In these applications, the ability to automatically recover after a fault helps protect both the device and the end user.

💎 Why Choose Semiware's PTC Fuse Solutions?

• Semiware is a professional manufacturer of self-resetting PTC fuses, offering a full range of SMD packaged products, including 0805，2920, 1206, 1812, and 0603. Widely used in consumer electronics, power supply, and industrial applications, these fuses are designed to provide reliable overcurrent protection.
• With stable volume production and rigorous quality control, Semiware provides customers with samples, detailed datasheets, and technical support throughout the design and procurement stages. We also offer cross-reference advice to help customers quickly find suitable alternatives.
• All Semiware PTC fuses comply with RoHS and REACH standards, ensuring compliance with global regulations and guaranteeing long-term stable supply.

If you are designing compact circuits or upgrading overcurrent protection, Semiware provides a full range of SMD0805 PTC fuses with stable performance and flexible supply. Detailed datasheets, cross-reference support, and technical guidance are available to help you select the right fuse for your application.

👉 Contact us to request product specifications, samples, or cross-reference recommendations.

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❓ FAQs

1.What is a PPTC fuse?

A PPTC fuse is a resettable overcurrent protection device that increases its resistance when excessive current flows and automatically resets after the fault is removed.

2.How does it compare to traditional fuses?

Traditional fuses are single-use and must be replaced after tripping, while PPTC fuses reset automatically and require no maintenance—ideal for consumer and portable electronics.

3.How does a PPTC fuse work?

During overcurrent, the polymer material heats up and expands, sharply increasing resistance to limit current. After cooling, it returns to its low-resistance state, restoring normal operation.

4.What is the difference between PPTC and PTC?

PPTC is a polymer-based PTC device designed specifically for resettable overcurrent protection, while standard PTC components are typically used for temperature sensing or inrush current limiting.

5.What is the difference between NTC and PTC?

NTC resistance decreases as temperature rises (used for sensing and inrush limiting), while PTC resistance increases with temperature (used for protection or heating functions).