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MF-RX090/72-AP-17
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Product Detailed Parameters
- Description：PTC RESETTABLE 0.9A 72V RADIAL L
- Series：Multifuse®, MF-RX/72
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- Type：Polymeric
- Voltage - Max：72V
- Current - Hold (Ih) (Max)：900 mA
- Current - Trip (It)：1.8 A
- Current - Max：40 A
- Time to Trip：7.2 s
- Resistance - Initial (Ri) (Min)：140 mOhms
- Resistance - Post Trip (R1) (Max)：470 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.461" Dia x 0.122" T (11.70mm x 3.10mm)
- Height - Seated (Max)：0.657" (16.70mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RX090/72-AP-17 is a radial leaded PPTC resettable fuse from the Multifuse MF-RX/72 series. It features a hold current of 0.9 A and a trip current of 1.8 A at 25°C. The device supports a maximum voltage of 72 VDC and offers a maximum fault current rating of 40 A. Initial resistance is typically 0.3 Ohms, with power dissipation rated at 1 W. Operating temperature ranges from -40°C to +85°C. Physical dimensions include a length of 11.7 mm, height of 16.7 mm, width of 3.1 mm, and a lead spacing of 5.1 mm.
Feature Summary
- Provides overcurrent protection through polymer positive temperature coefficient (PPTC) technology that automatically resets after fault clearance.
- Designed for high-voltage applications up to 72 VDC with robust fault current handling capabilities.
- Radial leaded construction facilitates through-hole PCB mounting in space-constrained layouts.
Applications
- Automotive circuit protection
- Consumer electronics overcurrent safeguarding
- Industrial instrumentation surge protection
Procurement Notes
Verify the specific suffix AP-17 against official Bourns documentation to confirm packaging configuration and compliance status. Ensure the selected variant matches the required hold current and voltage ratings for the target application. Cross-reference the datasheet for any recent product change notifications or material updates before finalizing procurement specifications.
Selection Notes
Select this component when a 0.9 A hold current and 72 VDC rating are required for radial mounting. Compare initial resistance and power dissipation values against thermal constraints. Ensure the trip time characteristics align with the protected circuit's tolerance to transient surges without nuisance tripping during normal operation.
Part Context
This part belongs to the Bourns Multifuse MF-RX/72 series of resettable fuses. These components utilize polymer PTC technology to provide reusable overcurrent protection. The series is designed for environments requiring reliable circuit safeguarding with automatic recovery capabilities after fault conditions are resolved.
FAQ
What is the maximum fault current rating for this device?
The maximum fault current rating is 40 A.
Does this component require replacement after a fault event?
No, it is a resettable fuse that automatically returns to a low-resistance state once the fault condition is removed and the device cools down.
