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MF-USML650-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 6.5A 1210
- Series：Multifuse®, MF-USML
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：6.5 A
- Current - Trip (It)：13 A
- Current - Max：50 A
- Time to Trip：2 s
- Resistance - Initial (Ri) (Min)：1 mOhms
- Resistance - Post Trip (R1) (Max)：14 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), Concave
- Size / Dimension：0.127" L x 0.102" W (3.22mm x 2.58mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.047" (1.20mm)
- Lead Spacing：-
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Overview
The Bourns MF-USML650-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse from the Multifuse USML series. Designed for high-voltage and high-temperature environments, this component provides overcurrent protection in a compact SMD package. It features a hold current of 0.65A and a trip current of 1.3A, with a maximum voltage rating of 60VDC. The device operates within a temperature range of -40°C to +85°C and offers robust short-circuit risk reduction while eliminating tripping caused by ambient temperature variations.
Feature Summary
- Provides overcurrent protection through polymer PTC technology
- Compact surface-mount design suitable for space-constrained layouts
- Eliminates nuisance tripping due to ambient temperature changes
- Offers cost-effective protection in harsh operating conditions
Applications
- Automotive circuit protection
- High-reliability electronic equipment
- Industrial transportation systems
- Communication infrastructure
- Consumer electronics
Procurement Notes
Verify the specific suffix against official Bourns documentation to confirm exact electrical ratings and packaging details. Ensure compatibility with your system's voltage and current requirements before integration. Check for any recent product change notifications or obsolescence memos. Confirm that the surface-mount footprint matches your PCB design guidelines. Validate regulatory compliance status for your target market.
Selection Notes
Select this component when space constraints require a surface-mount solution for overcurrent protection. Consider the 0.65A hold current and 60VDC rating for low-voltage DC applications. Evaluate the thermal environment to ensure operation within the specified -40°C to +85°C range. Compare against traditional radial lead fuses for size and resettable functionality benefits. Assess the need for elimination of temperature-induced tripping in your specific application.
Part Context
This part belongs to the Bourns Multifuse USML series, which focuses on high-temperature performance. The USML line is engineered for demanding environments where standard PPTCs might fail. It complements other Bourns circuit protection products like GDTs and MOVs for comprehensive surge protection strategies. The series emphasizes reliability in automotive and industrial sectors.
Replacement Considerations
Consult Bourns official resources for verified substitute part numbers if this component is discontinued or unavailable. Do not assume cross-compatibility with other series without verifying electrical parameters. Review datasheets for potential differences in hold current, trip current, and physical dimensions.
