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MF-RX185-AP-14
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Product Detailed Parameters
- Description：PTC RESET FUSE 60V 1.85A RADIAL
- Series：Multifuse®, MF-RX
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- Type：Polymeric
- Voltage - Max：60V
- Current - Hold (Ih) (Max)：1.85 A
- Current - Trip (It)：3.7 A
- Current - Max：40 A
- Time to Trip：12.6 s
- Resistance - Initial (Ri) (Min)：80 mOhms
- Resistance - Post Trip (R1) (Max)：190 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.701" Dia x 0.122" T (17.80mm x 3.10mm)
- Height - Seated (Max)：1.050" (26.67mm)
- Thickness (Max)：-
- Lead Spacing：0.402" (10.20mm)
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Overview
The Bourns MF-RX185-AP-14 is a radial leaded PolySwitch resettable fuse from the MF-RX/72 series. It features a hold current of 1.85 A and a trip current of 3.7 A, with a maximum voltage rating of 72 VDC. The device has a maximum resistance of 120 mΩ and a rated current of 40 A. It operates within a temperature range of -40°C to +85°C and utilizes a 5.1 mm lead spacing for PCB mounting.
Feature Summary
- Provides automatic circuit protection by increasing resistance in response to overcurrent conditions
- Automatically resets to a low-resistance state once the fault condition is removed and the device cools down
- Designed for through-hole PCB mounting with radial leads
Applications
- Overcurrent protection in consumer electronics circuits
- Protection for portable computing devices and peripherals
- Industrial control system power line safeguarding
Procurement Notes
Verify that the specific suffix AP-14 matches the required packaging configuration and compliance certifications such as RoHS and UL. Confirm that the radial lead pitch and body dimensions align with the target PCB footprint design requirements before finalizing procurement orders.
Selection Notes
Select this component when a 1.85 A hold current and 72 VDC maximum voltage are required for circuit protection. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range and that the 120 mΩ maximum resistance meets the circuit's voltage drop constraints.
Part Context
This part belongs to the Bourns MF-RX/72 series of self-resetting fuses. These components are designed to replace traditional fusible links in applications requiring repeated overcurrent protection without manual replacement, offering a cost-effective solution for protecting sensitive electronic components.
Replacement Considerations
Direct substitutes include other MF-RX185 variants with different suffixes if packaging or specific certification requirements differ. Verify that any replacement maintains the same 1.85 A hold current, 3.7 A trip current, and 72 VDC voltage rating to ensure circuit compatibility.
