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Bourns Resettable Fuse 1.85 A Hold Current, 33 V Voltage, 40 A Current Rating, Surface Mount MF-LSMF185/33X-2
Specifications
| Country of Origin | China |
|---|---|
| Voltage | 33V |
| Brand | Bourns |
| Height | 1.6mm |
| Length | 7.98mm |
| Model | MF-LSMF185/33X-2 |
| Width | 5.44mm |
| Current Rating | 40A |
| Series | MF-LSMF |
| Maximum Operating Temperature | 85°C |
| Package Type | Reel |
| Minimum Operating Temperature | -40°C |
| Package Size | 3121 |
| Trip Current | 3.7A |
| Power Dissipation | 1.5W |
| Terminal Material | Electroless Nickel Immersion Gold Plated |
| Standards/Approvals | RoHS |
| Time to Trip | 2.5s |
| Hold Current | 1.85A |
| Minimum Resistance | 0.045Ω |
| Maximum Resistance | 150mΩ |
Key Features
- The fuse features a trip current of 3.7 A and a time to trip of 2.5 seconds.
- Compact surface mount design with dimensions 7.98mm length, 5.44mm width, and 1.6mm height.
- Terminal material is electroless nickel immersion gold plated for reliable conductivity.
- Provides automatic reset capability for thousands of cycles, ensuring maintenance-free protection.
- RoHS compliant and halogen-free, compatible with lead and lead-free solder reflow profiles.
- Power dissipation rating of 1.5 W suitable for electronic circuit protection.
- Operating temperature range from -40°C to maximum 85°C.
- Features low resistance during normal operation and switches to high resistance under fault conditions.
Product Description
Bourns MF-LSMF185/33X-2 is a high-performance resettable fuse designed for electrical and electronic circuit protection. With a hold current of 1.85 A and rated voltage of 33 V, it safeguards circuits from overloads and short circuits by rapidly transitioning from low to high resistance states during fault conditions.
This fuse supports a trip current of 3.7 A and trips within 2.5 seconds, providing reliable and timely circuit interruption. Its compact surface mount package measures 7.98 mm in length, 5.44 mm in width, and 1.6 mm in height, making it suitable for dense PCB layouts.
The terminals are electroless nickel immersion gold plated, ensuring excellent solderability and conductivity. The fuse is RoHS compliant and halogen free, compatible with both lead and lead-free solder reflow profiles, fostering environmentally responsible assembly.
The device is maintenance free, capable of automatically resetting for thousands of cycles, making it ideal for continuous protection applications in automotive electronics, medical equipment, security systems, power supplies, transformers, instrumentation, and audiovisual devices.
Power dissipation is rated at 1.5 W, enabling it to handle moderate power without damage. Operating temperatures range from -40°C minimum to a maximum of 85°C, ensuring performance in various environments.
The fuse switches rapidly from low resistance to a high resistance state under electrical overload, preventing damage to circuit components. Its small size eliminates need for fuse holders, simplifying PCB design and assembly.
Packaged on reels for efficient insertion into automated manufacturing lines, improving production efficiency.
This Bourns resettable fuse series is trusted in industrial, automotive, telecommunications, and consumer electronics applications, where circuit protection and reliability are paramount.
Explore similar high-quality Resettable Fuses and circuit protection devices in our Electronics & Electricals category on EnvMart.
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Frequently Asked Questions
The hold current rating of this resettable fuse is 1.85 A.
The maximum operating temperature for this model is 85°C.
The trip current for this resettable fuse is 3.7 A.
This fuse has a time to trip of 2.5 seconds.
The dimensions of this resettable fuse are 7.98 mm in length, 5.44 mm in width, and 1.6 mm in height.
The power dissipation rating of this fuse is 1.5 W.
The terminal material of this fuse is electroless nickel immersion gold plated, which ensures reliable conductivity.
Yes, this resettable fuse is RoHS compliant and halogen-free.
The minimum operating temperature for this model is -40°C.
Under fault conditions, this fuse switches from low resistance to high resistance, preventing damage to circuit components.
This resettable fuse is suitable for applications in automotive electronics, medical equipment, security systems, power supplies, transformers, instrumentation, and audiovisual devices.
This fuse is packaged on reels, which facilitates efficient insertion into automated manufacturing lines.
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