The 2920L150DR-A is a surface-mount resettable fuse (PPTC) manufactured by Littelfuse Inc. It is designed to protect electronic circuits from overcurrent conditions. The '2920' refers to the package size, 'L150' indicates a hold current of 1.5A, 'DR' likely refers to the design and 'A' a specific revision.

Applications

• Overcurrent protection in electronic circuits
• USB port protection
• Power supply protection
• Battery protection
• General electronic device protection

Features

• Surface mount package: Facilitates automated assembly.
• Resettable: Returns to its low-resistance state after the overcurrent condition is removed.
• Hold current of 1.5A: Can continuously carry a current of 1.5A without tripping.
• Fast trip time: Quickly responds to overcurrent conditions.

Benefits

• Overcurrent protection: Protects electronic circuits from damage caused by excessive current.
• Resettable: Eliminates the need to replace fuses after a fault.
• Compact size: Saves board space.

Additional Details

The 2920L150DR-A is a Polymer Positive Temperature Coefficient (PPTC) device. When an overcurrent event occurs, the device heats up and its resistance increases dramatically, limiting the current flow and protecting the circuit. Once the fault condition is removed and the device cools down, it returns to its low-resistance state, allowing the circuit to operate normally. The surface-mount package allows for efficient and automated assembly. It is crucial in preventing damage to sensitive electronic components due to overcurrent or short circuit events. The hold current specifies the amount of current the device can carry continuously at a specified ambient temperature without tripping. The trip current is the current level that will cause the device to switch to a high resistance state.