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MF-R250U-AP
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 2.5A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- 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-R250U-AP is a radial leaded PTC resettable fuse from the MF-R series, designed for circuit protection. It features a hold current of 2.5 A and a trip current of 5 A at maximum voltage of 30 V. The component has a maximum resistance of 48 mΩ and operates within a temperature range of -40°C to +85°C. With a lead spacing of 5.1 mm and a height of 18.3 mm, it is supplied in reel packaging.
Feature Summary
- Provides automatic circuit protection through self-resetting polymeric positive temperature coefficient (PPTC) technology.
- Offers reliable performance in low-voltage applications with a maximum rated voltage of 30 V.
- Features radial leaded construction suitable for PCB mounting with standard lead spacing.
Applications
- Consumer electronics circuit protection
- Portable device power lines
- Low-voltage industrial control circuits
Procurement Notes
Verify that the specific suffix 'AP' matches the required packaging configuration, as datasheets may list variations such as '2' or other suffixes indicating different tape-and-reel specifications. Confirm the hold current rating of 2.5 A aligns with the target application's continuous operating requirements before finalizing procurement orders.
Selection Notes
Select this component when a 30 V maximum voltage rating is sufficient for the circuit design. Ensure the ambient operating temperature remains within the specified -40°C to +85°C range. The radial leaded format requires adequate PCB space for the 5.1 mm lead spacing and 18.3 mm component height during layout planning.
Part Context
This part belongs to the Bourns MF-R series of PTC resettable fuses, which are widely used for overcurrent protection in various electronic assemblies. The MF-R series provides a cost-effective alternative to traditional fuses by offering reusable protection without manual replacement after a fault event occurs.
Replacement Considerations
The MF-R250U-2 is a comparable radial leaded variant within the same series. Verify if the packaging difference between the AP and 2 suffixes impacts assembly compatibility. Cross-reference electrical parameters to ensure equivalent hold and trip currents for direct substitution.
