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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 2.5A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Bulk
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：2.5 A
- Current - Trip (It)：5:00 AM
- Current - Max：40 A
- Time to Trip：10.3 s
- Resistance - Initial (Ri) (Min)：25 mOhms
- Resistance - Post Trip (R1) (Max)：70 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.472" L x 0.118" W (12.00mm x 3.00mm)
- Height - Seated (Max)：0.720" (18.30mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-R250-AP-10 is a radial leaded PPTC resettable fuse from the Multifuse MF-R series. It features a 2.5 A hold current and a 5 A trip current, designed for circuits with a maximum voltage of 30 V. The device exhibits a low initial resistance of 48 mOhms and supports a maximum fault current of 40 A. It operates within a temperature range of -40°C to +85°C and has a power dissipation rating of 1.2 W. Physical dimensions include a length of 12 mm, width of 3 mm, and height of 18.3 mm, with a lead spacing of 5.1 mm.
Feature Summary
- Provides automatic circuit protection through self-resetting polymer positive temperature coefficient technology.
- Offers reliable overcurrent interruption without requiring manual replacement after tripping events.
Applications
- Overcurrent protection in consumer electronics assemblies
- Protection for portable computing peripheral interfaces
- Surge suppression in automotive signal circuits
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number against official Bourns documentation. Confirm that the specific suffix matches the required packaging configuration. Ensure compliance with RoHS directives as indicated in the technical specifications before integration into production workflows.
Selection Notes
Select this component based on the required hold current and maximum operating voltage constraints. Evaluate the thermal environment to ensure operation remains within the specified temperature limits. Consider the physical footprint and lead spacing requirements for PCB layout compatibility during the design phase.
Part Context
This device belongs to the Multifuse MF-R family of resettable fuses manufactured by Bourns Inc. The series provides compact circuit protection solutions utilizing polymer PTC technology. These components are engineered for applications requiring reliable overcurrent protection with automatic recovery capabilities.
Replacement Considerations
The MF-R250-99 is a confirmed substitute part number within the same product family. Verify that the alternative package type aligns with assembly requirements.
