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MF-RX110/72-2-14
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Product Detailed Parameters
- Description：PTC RESET FUSE 72V 1.1A 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)：1.1 A
- Current - Trip (It)：2.2 A
- Current - Max：40 A
- Time to Trip：8.2 s
- Resistance - Initial (Ri) (Min)：150 mOhms
- Resistance - Post Trip (R1) (Max)：380 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.427" L x 0.122" W (10.84mm x 3.10mm)
- Height - Seated (Max)：0.663" (16.84mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RX110/72-2-14 is a radial leaded PTC resettable fuse from the Multifuse MF-RX/72 series. It features a hold current of 1.1 A and a trip current of 2.2 A, with a maximum voltage rating of 72 VDC. The device has a maximum fault current capacity of 40 A and an initial resistance of 250 mΩ. It operates within a temperature range of -40°C to +85°C and utilizes a 5.1 mm lead spacing.
Feature Summary
- Provides automatic circuit protection through positive temperature coefficient polymer technology
- Offers repeated reset capability after fault conditions are cleared
- Designed for PCB mounting with radial leads for through-hole integration
Applications
- Overcurrent protection in electronic circuits
- Battery pack protection systems
- Consumer electronics power input stages
Procurement Notes
Verify the complete part number including suffixes such as -2-14 against official Bourns documentation to ensure correct packaging and lead configuration. Confirm that the specified hold and trip currents match the design requirements. Check RoHS compliance status and halogen-free declarations if required by project specifications. Ensure adequate board clearance is available for the radial lead spacing and component diameter during layout.
Selection Notes
Select this component when a 1.1 A hold current and 72 VDC rating are required for overcurrent protection. Consider the 250 mΩ initial resistance impact on circuit efficiency. Evaluate the thermal environment to ensure operation remains within the -40°C to +85°C range. Compare against similar series parts if different package styles or current ratings are needed.
Part Context
This device belongs to the Bourns Multifuse MF-RX/72 series of PTC resettable fuses. These components are designed for high-reliability applications requiring robust overcurrent protection. The series offers various hold current options while maintaining consistent voltage ratings and package styles for standardized design integration across multiple product lines.
Replacement Considerations
MF-RX110/72-2 is a parametric equivalent within the same series. Verify lead spacing and package dimensions before substitution. Ensure electrical parameters match application requirements.
