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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 & Reel (TR)
- 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-RX090/72-2-17 is a radial leaded PPTC resettable fuse from the MF-RX series. It features a maximum voltage of 72V and a hold current of 0.9A. The trip current is 1.8A with a maximum trip time of 7.2s. Rated for a maximum current of 40A, it operates between -40°C and +85°C. Resistance ranges from 0.14Ω to 470mΩ, with dimensions of 3.1mm width, 11.7mm length, and 16.7mm height.
Feature Summary
- Provides overcurrent protection through polymer positive temperature coefficient (PPTC) technology.
- Offers automatic circuit restoration after fault conditions clear without manual replacement.
- Designed for robust performance in high-voltage and high-temperature environments.
Applications
- Automotive circuit protection
- Industrial instrumentation
- Telecommunications equipment
Procurement Notes
Verify component authenticity by checking manufacturer markings against official datasheets. Confirm RoHS compliance status via the supplier's material data sheet. Ensure storage conditions maintain integrity prior to assembly. Validate that the specific suffix matches the required electrical characteristics for the target design.
Selection Notes
Select this component when a radial leaded form factor is required for PCB mounting. Choose based on the 0.9A hold current and 72V rating to match circuit parameters. Consider the 40A max current capability for surge tolerance. Evaluate thermal management needs within the specified operating temperature range.
Part Context
This part belongs to the Bourns Multifuse MF-RX series of resettable fuses. These components are engineered for general-purpose circuit protection across various electronic industries. The series provides a cost-effective alternative to traditional fusible links while maintaining reliable performance standards.
Replacement Considerations
Consult official substitution guides for verified equivalents. Ensure replacement parts match the 72V rating and 0.9A hold current specifications. Verify physical dimensions fit the existing footprint.
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