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MF-RX014/250U-B5-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 60V 145MA RADIAL
- Series：Multifuse®, MF-RX/250
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- Type：Polymeric
- Voltage - Max：60V (250V Int)
- Current - Hold (Ih) (Max)：145 mA
- Current - Trip (It)：-
- Current - Max：3:00 AM
- Time to Trip：-
- Resistance - Initial (Ri) (Min)：4.5 Ohms
- Resistance - Post Trip (R1) (Max)：14 Ohms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.236" L x 0.150" W (6.00mm x 3.80mm)
- Height - Seated (Max)：0.394" (10.00mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RX014/250U-B5-2 is a resettable polymer positive temperature coefficient (PPTC) device from the Multifuse RX series. It functions as an overcurrent protection component designed for radial leaded circuit integration. The device utilizes a conductive polymer composite that increases resistance significantly upon thermal activation, effectively interrupting excessive current flow to safeguard downstream electronics. This specific part number represents a variant within the broader Multifuse family, engineered to provide reliable fault recovery without requiring manual replacement after trip events.
Feature Summary
- Provides automatic circuit interruption during overcurrent conditions
- Enables automatic functional restoration once fault conditions are removed and the device cools
- Offers robust protection against short circuits and sustained overloads
Applications
- Consumer electronic device power input protection
- Industrial control circuit overcurrent safeguarding
- Telecommunications equipment line protection
Procurement Notes
Verify the exact electrical ratings and physical dimensions against the official Bourns datasheet for the MF-RX series before finalizing procurement. Confirm that the specific suffix indicates the required voltage and current characteristics for your design. Ensure compatibility with your assembly process and verify compliance requirements such as RoHS status through authorized distribution channels.
Selection Notes
Select this component based on the required hold current and trip current specifications necessary for your application's normal operating range. Consider the maximum voltage rating and the physical package constraints of your printed circuit board layout. Evaluate the thermal environment to ensure the device operates within its specified temperature limits while maintaining effective protection performance.
Part Context
This component belongs to the Bourns Multifuse PPTC resettable fuse family, which offers cost-effective alternatives to traditional fuses. The Multifuse line provides various series tailored for different mounting styles and environmental conditions, including surface mount and radial leaded options. These devices are widely utilized across multiple industries for their ability to protect sensitive components from damage due to electrical faults.
Replacement Considerations
Consult the official Bourns substitution guide or datasheet for confirmed equivalent part numbers within the Multifuse RX series. Verify that any substitute matches the original hold current, trip current, and voltage ratings precisely. Do not assume interchangeability with other series or manufacturers without validating technical specifications.
