The SMD075F-2 is a resettable fuse from TE Connectivity, designed for surface mount applications. These devices, also known as PolySwitch devices or polymeric positive temperature coefficient (PPTC) devices, offer reliable overcurrent protection in a compact form factor. They function by increasing their resistance significantly when an overcurrent condition occurs, limiting the fault current and protecting downstream components. Once the fault is cleared and power is removed, the device cools down and resets to its low-resistance state, allowing normal circuit operation to resume.

Applications

• USB ports: Protecting against overcurrent events caused by faulty USB devices or short circuits.
• HDMI ports: Safeguarding sensitive HDMI circuitry from damage due to excessive current flow.
• Power supply protection: Providing overcurrent protection for power supplies in various electronic devices.
• Battery packs: Protecting battery packs from overcurrent and short-circuit conditions, enhancing safety and extending battery life.
• General electronic devices: Used in a wide range of electronic devices to protect against overcurrent faults.

Features

• Surface mount device (SMD): Designed for automated assembly processes, reducing manufacturing time and costs.
• Resettable: Automatically resets after the overcurrent condition is removed, eliminating the need for manual replacement.
• Compact size: Occupies minimal board space, allowing for denser circuit designs.
• Fast trip time: Responds quickly to overcurrent events, minimizing damage to protected components.
• Low resistance: Maintains a low resistance under normal operating conditions, minimizing power losses.

Benefits

• Enhanced circuit protection: Provides reliable overcurrent protection, safeguarding sensitive electronic components from damage.
• Reduced downtime: Automatically resets after a fault, minimizing downtime and improving system reliability.
• Lower maintenance costs: Eliminates the need for fuse replacement, reducing maintenance costs and improving overall system efficiency.
• Improved safety: Protects against fire hazards and other safety risks associated with overcurrent events.
• Simplified design: Easy to integrate into existing circuit designs, simplifying the design process.

Specifications:

Unfortunately, highly specific technical specifications are not publicly available without datasheet access. Generally, look for specifications such as:

• Hold Current (Ih): The maximum current the device can carry without tripping.
• Trip Current (It): The current at which the device will trip and increase its resistance.
• Voltage Rating: The maximum voltage the device can withstand.
• Operating Temperature Range: The range of temperatures the device can operate within.

It's crucial to consult the official datasheet for the SMD075F-2 for detailed specifications and performance characteristics to ensure proper application and circuit design.