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MF-RX040/72-AP-17
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Product Detailed Parameters
- Description：PTC RESETTABLE 0.4A 72V RADIAL L
- Series：Multifuse®, MF-RX/72
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- Type：Polymeric
- Voltage - Max：72V
- Current - Hold (Ih) (Max)：400 mA
- Current - Trip (It)：800 mA
- Current - Max：40 A
- Time to Trip：3.9 s
- Resistance - Initial (Ri) (Min)：520 mOhms
- Resistance - Post Trip (R1) (Max)：1.29 Ohms
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.291" Dia x 0.122" T (7.40mm x 3.10mm)
- Height - Seated (Max)：0.539" (13.70mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RX040/72-AP-17 is a radial leaded PPTC resettable fuse from the Multifuse MF-RX/72 series. It features a 72 VDC maximum voltage rating and a 400 mA hold current. The device trips at 800 mA with a maximum trip time of 12.6 seconds. It has a maximum resistance of 1.36 Ohms and operates within a temperature range of -40°C to +85°C. The component is packaged in an ammo pack.
Feature Summary
- Provides overcurrent protection through automatic resistance increase during fault conditions
- Offers reusable circuit protection without requiring manual replacement after tripping
- Designed for PCB mounting using radial leads
Applications
- Overcurrent protection for portable electronic devices
- Surge protection in communication equipment
- Circuit safeguarding in industrial instrumentation
Procurement Notes
Verify the specific suffix AP-17 against official Bourns documentation to confirm packaging type and reel specifications. Ensure the hold current and voltage ratings match the target circuit requirements. Confirm RoHS compliance status via the manufacturer datasheet before procurement.
Selection Notes
Select this component when a 72V DC rated radial PPTC fuse is required. The 400mA hold current suits low-power circuits needing resettable protection. Verify that the 1.36 Ohm maximum resistance does not exceed circuit impedance limits. Ensure the operating temperature range covers the application environment.
Part Context
This part belongs to the Bourns Multifuse MF-RX/72 series, which provides polymer positive temperature coefficient resettable fuses. These components are designed for high-voltage applications up to 72V DC. The series offers robust protection against short circuits and overloads in various electronic systems.
Replacement Considerations
Compatible substitutes include other MF-RX/72 series variants with matching electrical ratings. Verify equivalent hold current, trip current, and voltage ratings. Check for identical package dimensions and lead spacing to ensure mechanical compatibility.
