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Product Detailed Parameters
- Description:PTC RESET FUSE 30V 8A RADIAL
- Series:Multifuse®, MF-R
- Mfr:Bourns Inc.
- Package:Tape & Box (TB)
- Type:Polymeric
- Voltage - Max:30V
- Current - Hold (Ih) (Max):8:00 AM
- Current - Trip (It):16 A
- Current - Max:40 A
- Time to Trip:18.8 s
- Resistance - Initial (Ri) (Min):5 mOhms
- Resistance - Post Trip (R1) (Max):30 mOhms
- Operating Temperature:-40°C ~ 85°C
- Grade:-
- Qualification:-
- Ratings:-
- Mounting Type:Through Hole
- Package / Case:Radial, Disc
- Size / Dimension:0.953" L x 0.118" W (24.20mm x 3.00mm)
- Height - Seated (Max):1.295" (32.90mm)
- Thickness (Max):-
- Lead Spacing:0.402" (10.20mm)
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Overview
The Bourns MF-R800-AP-99 is a radial leaded PTC resettable fuse from the MF-R series, rated for 30V DC with an 8A hold current and 16A trip current. It features a maximum initial resistance of 5mΩ and a post-trip resistance of 30mΩ, dissipating up to 4W. The component operates within a -40°C to +85°C range and utilizes a through-hole package measuring 24.20 x 3.00mm in size with a height of 32.90mm.
Feature Summary
- Provides automatic circuit protection by increasing resistance during overcurrent events
- Restores normal operation after fault conditions are removed
- Designed for repeated use without replacement
Applications
- Overcurrent protection in consumer electronics
- Circuit safeguarding in industrial instrumentation
- Protection for telecommunications equipment ports
Procurement Notes
Verify the specific suffix '-AP-99' against official Bourns documentation to confirm packaging configuration and compliance status. Ensure the selected variant matches the required lead style and reel specifications for automated assembly processes. Cross-reference the datasheet for any updates regarding RoHS or REACH directives applicable to this specific part number.
Selection Notes
Select this component when an 8A hold current and 30V rating align with the circuit requirements. Consider the 16A trip current threshold for fault detection sensitivity. Evaluate the thermal environment to ensure operation remains within the specified -40°C to +85°C range. Confirm that the radial leaded package fits the PCB layout constraints.
Part Context
This part belongs to the MF-R series of PPTC devices manufactured by Bourns Inc. The series offers resettable protection solutions for various electronic applications. The MF-R800-AP-99 variant specifically provides high-current protection capabilities suitable for demanding circuit environments requiring reliable overcurrent safeguards.
Replacement Considerations
Consult official Bourns substitution guides for compatible alternatives. Verify electrical parameters such as hold current, trip current, and voltage ratings match the original design requirements before replacing.
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