The SMD030-2018-2 is a resettable Polymeric Positive Temperature Coefficient (PPTC) surface mount device manufactured by TE Connectivity. It's designed to protect electronic circuits from overcurrent and short-circuit conditions. When an overcurrent event occurs, the device heats up and transitions to a high-resistance state, limiting the current flow and protecting the circuit.

Applications

• USB Port Protection
• Power Port Protection
• General Electronic Equipment
• Hard Disk Drives
• Mobile Phones
• Gaming Consoles

Features

• Surface Mount: Designed for automated assembly and efficient use of board space.
• Resettable: Returns to a low-resistance state after the overcurrent condition is removed.
• Fast Trip Time: Quickly responds to overcurrent events.
• Low Profile: Minimizes height above the PCB.
• Solid State: Improves reliability compared to traditional fuses.
• RoHS Compliant: Compliant with environmental regulations.

Benefits

• Protects electronic circuits from overcurrent faults.
• Resets automatically after the fault is cleared.
• Reduces downtime and maintenance costs.
• Enhances system reliability.
• Provides a safe and reliable method of overcurrent protection.

Additional Details

The SMD030-2018-2 has a hold current of 3.0A and a trip current higher than that (refer to the TE Connectivity datasheet for exact values). The voltage rating is dependent on the specific model within the SMD series, so please refer to the datasheet for precise values. These devices offer a compact footprint and are commonly used to protect sensitive components from damage caused by excessive current. The device's resistance increases sharply when the trip current is exceeded, effectively limiting the current and preventing further damage. Once the fault is removed and the device cools down, it returns to its low-resistance state, allowing normal circuit operation to resume. The 2018 indicates the dimensions of the device in mils (20x18 mils). Operating temperature range: -40°C to +85°C.