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MF-USML230-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 2.3A 1210
- Series：Multifuse®, MF-USML
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Bulk
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：2.3 A
- Current - Trip (It)：4.6 A
- Current - Max：50 A
- Time to Trip：3.5 s
- Resistance - Initial (Ri) (Min)：4.5 mOhms
- Resistance - Post Trip (R1) (Max)：24 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)：0.024" (0.60mm)
- Lead Spacing：-
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Overview
The MF-USML230-2 is a polymeric resettable fuse from Bourns Inc., designed for surface mount applications in the 1210 package. It features a maximum operating voltage of 6V and a hold current rating of 2.3A. The device provides overcurrent protection with an initial resistance minimum of 4.5 mOhms and a post-trip resistance maximum of 24 mOhms. It operates within a temperature range of -40°C to 85°C and supports a maximum surge current of 50A, with a typical trip time of 3.5 seconds.
Feature Summary
- Polymeric PTC material construction for reliable resettable circuit protection
- Surface mount design compatible with standard SMD assembly processes
- Low resistance profile to minimize power loss during normal operation
Applications
- Portable electronic device power line protection
- USB peripheral circuit safeguarding
- Low-voltage battery-powered system overcurrent defense
Procurement Notes
Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status and lead-free specifications prior to integration. Check for obsolete status indicators as manufacturing availability may be limited. Ensure storage conditions maintain device integrity before soldering.
Selection Notes
Select this component for low-voltage circuits requiring compact overcurrent protection. Evaluate hold current requirements against operational load profiles. Consider thermal derating factors based on ambient operating temperatures. Verify package dimensions fit within PCB layout constraints.
Part Context
This part belongs to Bourns' MF-USML series of miniature resettable fuses. The series offers various current ratings within the same footprint family. It serves as a protective alternative to traditional one-time fuses in space-constrained electronics.
Replacement Considerations
DigiKey lists similar available substitutes for this obsolete part number. Cross-reference electrical parameters such as hold current and voltage rating when selecting alternatives.
