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MF-RX250/72-2-14
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Product Detailed Parameters
- Description：PTC RESET FUSE 72V 2.5A RADIAL
- Series：Multifuse®, MF-RX/72
- Mfr：Bourns Inc.
- Package：Cut Tape (CT),Tape & Box (TB)
- Type：Polymeric
- Voltage - Max：72V
- Current - Hold (Ih) (Max)：2.5 A
- Current - Trip (It)：5:00 AM
- Current - Max：40 A
- Time to Trip：15.6 s
- Resistance - Initial (Ri) (Min)：50 mOhms
- Resistance - Post Trip (R1) (Max)：130 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.702" L x 0.122" W (17.84mm x 3.10mm)
- Height - Seated (Max)：0.785" (19.94mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The MF-RX250/72-2-14 is a resettable PPTC fuse from the Bourns Multifuse RX series. It features a hold current of 2.5 A and a trip current of 5 A at maximum voltage of 72 VDC. The device has a minimum resistance of 5 mOhms and withstands a maximum fault current of 40 A. It operates within a temperature range of -40°C to +85°C, utilizes radial leads with a 5.1 mm spacing, and measures 15.18 mm in diameter.
Feature Summary
- Provides automatic circuit protection by increasing resistance during overcurrent events
- Self-restores conductivity after the fault condition is removed and power is cycled
- Designed for through-hole PCB mounting with radial lead configuration
Applications
- Consumer electronics power supply circuits
- Industrial instrumentation protection
- Telecommunications equipment input stages
- Battery pack management systems
Procurement Notes
Verify the specific suffix '-2-14' against the official Bourns datasheet to confirm lead form and packaging specifications. Ensure the selected variant matches the required hold current and voltage ratings for the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before procurement.
Selection Notes
Select this component when an overcurrent protection solution requiring manual reset capability is needed. The 2.5 A hold current suits moderate load applications. Verify that the 72 VDC rating exceeds the system's maximum operating voltage. Consider the thermal environment to ensure the device remains within its specified operating temperature range during normal operation.
Part Context
This part belongs to the Bourns Multifuse RX series of polymer positive temperature coefficient devices. These components are designed as replacements for traditional fuses in applications where resettable protection is preferred. The series offers various hold currents and voltage ratings to accommodate different circuit requirements while maintaining a compact radial package.
Replacement Considerations
Compatible substitutes include other Bourns Multifuse RX series parts with matching electrical ratings. Verify that any alternative maintains the same voltage, hold current, and physical dimensions for direct board replacement.
