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MF-R250-2-14
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Product Detailed Parameters
- Description：PTC RESETTABLE 2.5A 30V RADIAL L
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- 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：Automotive
- Qualification：AEC-Q200
- 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 MF-R250-2-14 is a polymeric PTC resettable fuse manufactured by Bourns Inc., designed for through-hole radial mounting with a kinked lead option. It features a maximum voltage rating of 30V and a hold current (Ih) of 2.5A, with a trip current (It) of 5A. The device has an initial resistance (Ri) minimum of 25 mOhms and a post-trip resistance (R1) maximum of 70 mOhms. It can withstand a maximum fault current of 40A and operates within a temperature range of -40°C to 85°C.
Feature Summary
- Provides automatic circuit protection against overcurrent conditions using polymeric positive temperature coefficient technology.
- Features a kinked lead configuration to facilitate secure through-hole mounting on printed circuit boards.
- Offers reliable resettable functionality without requiring manual replacement after tripping events.
Applications
- Overcurrent protection in consumer electronics circuits
- Signal line protection in communication equipment
- Power supply input protection for low-voltage systems
Procurement Notes
Verify the specific suffix -14 indicates the kinked lead variant when sourcing. Confirm that the 30V rating aligns with your system's maximum operating voltage. Ensure the 2.5A hold current meets the continuous load requirements. Check the 40A maximum current capability against potential fault scenarios. Validate the -40°C to 85°C operating range for your environmental conditions.
Selection Notes
Select this component when a resettable solution is preferred over traditional fuses for low-voltage applications. The 2.5A hold current suits moderate load protection needs. The kinked lead design aids in mechanical stability during assembly. Consider the 30V limit for compatibility with standard logic and power rails. Evaluate the thermal performance within the specified operating temperature range.
Part Context
This part belongs to the MF-R series of PTC resettable fuses from Bourns Inc. The series offers various current ratings and package options for circuit protection. The MF-R250-2-14 specifically addresses applications requiring radial through-hole mounting with modified leads. It complements other Bourns protection devices for comprehensive circuit safety strategies.
Replacement Considerations
Direct substitutes may include other MF-R series variants with similar electrical ratings but different lead configurations. Verify that any replacement maintains the 30V max voltage and 2.5A hold current specifications. Ensure the alternative supports through-hole mounting if mechanical constraints apply. Cross-reference datasheets for resistance and trip current compatibility.
