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MF-RX250/72-AP-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：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)：0.839" (21.30mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RX250/72-AP-14 is a radial leaded PTC resettable fuse from the Multifuse RX series. It features a hold current of 2.5 A and a trip current of 5 A, rated for a maximum voltage of 72 VDC. The device exhibits a minimum resistance of 0.05 Ohms and supports a maximum fault current of 40 A. It operates within a temperature range of -40°C to +85°C with a lead spacing of 5.1 mm. The component utilizes polymer technology for overcurrent protection.
Feature Summary
- Provides automatic circuit recovery after fault conditions clear
- Utilizes polymer positive temperature coefficient technology
- Designed for through-hole PCB mounting applications
Applications
- Overcurrent protection in industrial control systems
- Circuit safeguarding in telecommunications equipment
- Protection for consumer electronics power inputs
Procurement Notes
Verify the specific suffix designation against official manufacturer documentation to confirm physical dimensions and packaging configuration. Ensure that the requested variant matches the exact electrical ratings required for the target application circuit. Cross-reference the part number with the latest datasheet to confirm availability status and compliance certifications prior to finalizing procurement orders.
Selection Notes
Select this component when a high hold current near 2.5 A is required alongside a 72 VDC rating. Consider the low initial resistance for minimal power loss in normal operation. Evaluate the thermal environment to ensure the operating temperature range remains within specified limits during continuous duty cycles.
Part Context
This part belongs to the Bourns Multifuse RX series of resettable fuses. The series offers various hold currents and voltage ratings tailored for different circuit protection needs. The RX line is characterized by its rapid response time and compact radial package suitable for space-constrained designs.
Replacement Considerations
Consult official substitution guides for equivalent parts within the same series or alternative manufacturers offering matching electrical specifications.
