The MF-R040 is a resettable PTC (Positive Temperature Coefficient) fuse manufactured by Bourns. Here are the specifications for this
component:
- Type: PTC Resettable Fuse
- Voltage Rating: 60V
- Current Rating: 400mA
- Package: Radial
- Hold Current: 200mA
- Trip Current: 400mA
- Max Time to Trip: 5.2s at 200% of rated current
- Operating Temperature Range: -40°C to 85°C
- Applications: These types of resettable fuses are commonly used to protect circuits from overcurrent and short-circuit faults. Once the fault condition is removed, they will automatically reset.
Function:
PTC resettable fuses protect electrical circuits from overcurrent conditions. When the current exceeds the trip current level, the PTC fuse heats up, causing its internal resistance to increase and limit the current through the circuit. After the fault is removed and the PTC fuse cools down, its resistance decreases, allowing current to flow again.
Application:
Resettable fuses are utilized in a broad range of electronic products and industries, including:
- Consumer Electronics: Found in devices such as smartphones, laptops, and power banks to protect against overcurrent faults.
- Automotive Electronics: Used 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.
The Bourns MF-R040, with its ability to automatically reset after a fault condition, and its ability to handle a wide range of voltages and currents, is suitable for a variety of electronic circuits and can provide reliable overcurrent protection.
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