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MF-R500-2-99
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 5A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：5:00 AM
- Current - Trip (It)：10:00 AM
- Current - Max：40 A
- Time to Trip：14.5 s
- Resistance - Initial (Ri) (Min)：10 mOhms
- Resistance - Post Trip (R1) (Max)：50 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.685" L x 0.118" W (17.40mm x 3.00mm)
- Height - Seated (Max)：0.980" (24.90mm)
- Thickness (Max)：-
- Lead Spacing：0.402" (10.20mm)
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Overview
The Bourns MF-R500-2-99 is a polymeric PTC resettable fuse from the Multifuse MF-R series. It features a hold current of 5A and a trip current of 10A, rated for a maximum voltage of 30V. The device offers a maximum fault current rating of 40A and has a typical resistance of 0.01 Ohms. Designed for through-hole radial disc mounting with a lead spacing of 10.20mm, it operates within a temperature range of -40°C to +85°C.
Feature Summary
- Provides automatic circuit protection against overcurrent and overheating conditions
- Self-resetting functionality eliminates the need for manual replacement after fault clearance
- Low resistance design minimizes power loss during normal operation
Applications
- Overcurrent protection in portable electronic devices
- Circuit safeguarding in telecommunications equipment
- Protection for peripheral interfaces and data lines
Procurement Notes
Verify component authenticity by checking manufacturer markings and datasheet alignment. Confirm RoHS compliance status and packaging type (Tape & Reel) matches project requirements. Ensure storage conditions adhere to moisture sensitivity levels to maintain performance integrity upon installation.
Selection Notes
Select this component when a 5A hold current and 30V rating are required for radial PCB applications. Consider the 10.20mm lead spacing for board layout compatibility. Evaluate thermal dissipation needs as the device relies on ambient cooling for recovery after tripping events.
Part Context
This part belongs to the Multifuse MF-R series, designed for general-purpose circuit protection. It complements other Bourns components like the MF-R250-99, offering higher current capacity while maintaining similar low-profile radial packaging standards for space-constrained designs.
Replacement Considerations
Direct substitutes include other 5A/30V radial PTC fuses from compatible manufacturers. Verify that alternative parts match the 10.20mm lead pitch and 40A max fault current rating to ensure equivalent circuit protection performance.
