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MF-RX135/72-0-14
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Product Detailed Parameters
- Description：FUSE PTC RESETTABLE
- Series：MF-RX/72
- Mfr：Bourns Inc.
- Package：Bulk
- Type：-
- Voltage - Max：72V
- Current - Hold (Ih) (Max)：1.35 A
- Current - Trip (It)：2.7 A
- Current - Max：40 A
- Time to Trip：9.6 s
- Resistance - Initial (Ri) (Min)：-
- Resistance - Post Trip (R1) (Max)：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.483" L x 0.122" W (12.26mm x 3.10mm)
- Height - Seated (Max)：0.718" (18.26mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RX135/72-0-14 is a PTC resettable fuse from the MF-RX/72 series, designed for overcurrent protection in electronic circuits. It features a hold current of 1.35 A and a trip current of 2.7 A at ambient temperature. The device supports a maximum voltage of 72 VDC and offers a high fault current rating of 40 A. With an initial resistance of 200 mOhms, it operates within a temperature range of -40°C to +85°C. The component utilizes radial leaded termination with a 5.1 mm lead spacing, housed in a bulk package.
Feature Summary
- Provides automatic circuit recovery after fault clearance without manual replacement
- Offers dual certification for UL and CSA safety standards
- Features low initial resistance to minimize power loss during normal operation
- Designed for through-hole PCB mounting with radial leads
Applications
- Portable computer peripheral protection
- Battery pack overcurrent protection
- Communication equipment circuit safeguarding
- Automotive electronics protection
Procurement Notes
Verify the specific suffix code to ensure correct packaging configuration, as variations exist between bulk and tape-and-reel options. Confirm that the required hold current aligns with the circuit's normal operating parameters to prevent nuisance tripping. Check for updated safety certifications such as UL 1434 and CSA C22.2 No. 0 before final procurement decisions.
Selection Notes
Select this component when a 72 VDC maximum voltage rating is required alongside a 1.35 A hold current. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range. Consider the physical dimensions and lead spacing for PCB layout compatibility. Evaluate the trip current characteristics against potential surge currents to avoid unintended activation.
Part Context
This part belongs to the Bourns MF-RX/72 series of PTC resettable fuses. The series provides various hold current options ranging from 0.135 A to 3.75 A, all sharing the same 72 VDC maximum voltage rating. The MF-RX135/72-0-14 specifically addresses applications requiring moderate current protection with standard radial leaded packaging for easy integration into printed circuit boards.
Replacement Considerations
- MF-RX135/72-AP-14
FAQ
What is the difference between the MF-RX135/72-0-14 and MF-RX135/72-AP-14?
The primary difference lies in the packaging configuration. The MF-RX135/72-0-14 is typically supplied in bulk packaging, while the MF-RX135/72-AP-14 variant often refers to tape-and-reel packaging suitable for automated assembly processes.
Is this fuse certified for use in both the US and Canada?
Yes, the MF-RX135/72-0-14 carries both UL Recognized Component (File E196349) and CSA Certified (File LR103633) markings, making it suitable for products intended for sale in North America.
