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Bourns 2.5 A Resettable Fuse 30V Radial Leaded MFR Series MF-R250
Specifications
| Country of Origin | India |
|---|---|
| Voltage | 30V |
| Brand | Bourns |
| Height | 18.3mm |
| Length | 12mm |
| Model | MF-R250 |
| Width | 3mm |
| Current Rating | 40A |
| Series | MFR |
| Maximum Operating Temperature | 85°C |
| Minimum Operating Temperature | -40°C |
| Trip Current | 5A |
| Power Dissipation | 1.2W |
| Standards/Approvals | RoHS, UL |
| Lead Diameter | 0.81mm |
| Time to Trip | 10.3s |
| Hold Current | 2.5A |
| Minimum Resistance | 0.025Ω |
| Maximum Resistance | 70mΩ |
| Lead Orientation | Radial |
| Littelfuse 2.5 A Resettable Fuse, 30V dcBrand | Littelfuse |
Key Features
- Automatically resets thousands of times, providing maintenance-free circuit protection.
- Compact size with 12mm length, 18.3mm height, and 3mm width.
- Rated for 40 A current with a 5 A trip current and 10.3 s time to trip.
- Flame retardant epoxy polymer insulating material meets UL 94V-0 for safety.
- Operates reliably between -40°C and 85°C with low resistance characteristics.
- Uses radial leads with 0.81mm diameter for easy PCB mounting.
- Meets RoHS and UL standards with MFR series certification.
- Ideal for protecting electrical and electronic circuits in power supplies, automotive, medical equipment, and instrumentation.
Product Description
The Bourns MF-R250 is a 2.5 A Resettable Fuse designed for circuit protection in sensitive electrical and electronic equipment. It features a radial leaded form factor that enables easy PCB mounting in compact spaces.
This fuse is rated for 30V with a hold current of 2.5 A and a maximum current rating of 40 A. It trips within 10.3 seconds at a trip current of 5 A, providing fast response to overcurrent events to prevent damage.
Construction includes a cured, flame retardant epoxy polymer insulating material that meets stringent UL 94V-0 flammability standards, ensuring reliable and safe operation at operating temperatures ranging from -40°C to 85°C. The device also dissipates power up to 1.2W during normal operation.
Physical dimensions are 12 mm length, 18.3 mm height, and 3 mm width, with radial leads of 0.81 mm diameter. The fuse offers a very low minimum resistance of 0.025 Ω and maximum resistance of 70 mΩ, maintaining low impact on circuit performance prior to tripping.
Certified to RoHS and UL standards, this fuse is maintenance-free and capable of automatically resetting thousands of times, enhancing system reliability. It is suitable for use in security systems, power supplies, transformers, power switching devices, automotive and medical equipment, instrumentation and control systems, computers and peripherals, as well as audio visual and telecommunications applications.
Automatically resets thousands of times without manual replacement. Maintenance-free operation reduces service needs and downtime. Compact radial leaded design for PCB integration. Wide operating temperature range from -40°C to 85°C.
UL 94V-0 flame retardant epoxy polymer improves safety. Low resistance preserves circuit integrity in normal operation. Meets globally recognized RoHS and UL certification standards. Suitable for diverse industrial, automotive, medical, and communication equipment applications.
Explore more in the Electrical, Automation & Cables category to find compatible circuit protection devices and accessories.
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Frequently Asked Questions
The Bourns MF-R250 has a maximum current rating of 40 A and a hold current of 2.5 A.
The trip current for the MF-R250 is 5 A, and it trips within 10.3 seconds at this current level.
This resettable fuse measures 12 mm in length, 18.3 mm in height, and 3 mm in width.
It operates reliably between -40°C and 85°C.
This model uses radial leads with a diameter of 0.81 mm for easy PCB mounting.
The fuse is made from a cured, flame retardant epoxy polymer insulating material that meets UL 94V-0 standards.
It meets RoHS and UL standards, ensuring compliance with safety and environmental regulations.
The fuse automatically resets thousands of times without manual replacement, providing maintenance-free circuit protection.
The MF-R250 has a minimum resistance of 0.025 Ω and a maximum resistance of 70 mΩ.
This resettable fuse is suitable for protecting electrical and electronic circuits in power supplies, automotive, medical equipment, and instrumentation.
The Bourns MF-R250 dissipates power up to 1.2 W during normal operation.
The time to trip for the MF-R250 is 10.3 seconds, which allows for quick response to overcurrent events to prevent damage.
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