MICROSMD050F-2 Littelfuse PTC RESET FUSE 13.2V 500MA 1210

The MICROSMD050F-2 is a resettable fuse, also known as a PTC (Positive Temperature Coefficient) fuse, manufactured by Littelfuse. Here are the specifications for this component:


  • Type: PTC Resettable Fuse
  • Voltage Rating: 13.2V
  • Current Rating: 500mA
  • Package: 1210 (3225 Metric)
  • Trip Current: 500mA
  • Hold Current: 250mA
  • Operating Temperature Range: -40°C to 85°C
  • Applications: These resettable fuses are commonly used to protect circuits from overcurrent and short-circuit faults. They are designed to automatically reset once the fault condition is removed.


PTC resettable fuses are designed to protect electrical circuits from overcurrent conditions. When the current exceeds the trip current level, the PTC fuse will heat up and its resistance will increase, limiting the current through the circuit. Once the fault is removed and the PTC fuse cools down, its resistance decreases, allowing current to flow again.


Resettable fuses are utilized in a wide range of electronic products and industries, including:

  • Consumer Electronics: Used in devices such as smartphones, laptops, and power banks to protect against overcurrent faults.
  • Automotive Electronics: Found in electronic control units (ECUs), battery management systems, and various automotive electronics to safeguard against overcurrent faults.
  • Industrial Equipment: Utilized in industrial machinery and equipment to provide overcurrent protection.

Due to its resettable functionality and small form factor, the MICROSMD050F-2 is suitable for use in various electronic circuits and can provide reliable overcurrent protection.

DataSheet MICROSMD050F-2 PDF

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