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MF-R800-0-003
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 8A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Bulk
- 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-R800-0-003 is a PTC self-resetting fuse from the MF-R series, designed for overcurrent protection. It features a hold current of 8A and a trip action current of 16A. Rated at 30V DC, it operates within a temperature range of -40°C to +85°C. The component has an initial resistance minimum of 5mΩ and a maximum post-trip resistance of 30mΩ. It utilizes a through-hole package with a 10.2mm pitch, measuring 24.20 x 3.00mm in size and 32.90mm in height. Maximum power dissipation is 4W, with a maximum current rating of 40A.
Feature Summary
- Provides automatic circuit reset capability after fault clearance without manual intervention.
- Offers robust overcurrent protection through positive temperature coefficient resistance characteristics.
- Supports high surge currents up to 40A while maintaining stable operation under normal conditions.
Applications
- Overcurrent protection in industrial instrumentation circuits
- Surge protection in telecommunications equipment
- Circuit safeguarding in office machines
Procurement Notes
Verify the specific ordering suffix matches the required lead time and packaging configuration. Confirm RoHS compliance status and moisture sensitivity level (MSL 1) for storage and handling requirements. Ensure the through-hole package dimensions align with the target PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when an 8A hold current and 30V DC rating are required for circuit protection. Consider the 10.2mm pin pitch and axial dimensions for mechanical fitment. Evaluate the thermal environment to ensure operation remains within the specified -40°C to +85°C range during both normal and fault conditions.
Part Context
This part belongs to the Bourns MF-R series of PTC resettable fuses, which are widely used for secondary protection in electronic circuits. The series provides reliable overcurrent protection solutions across various industries, including consumer electronics and industrial applications, offering a reusable alternative to traditional fusible links.
Replacement Considerations
Consult official Bourns documentation for verified substitute part numbers within the MF-R series or compatible families. Ensure any replacement maintains identical electrical ratings, such as hold current, trip current, and voltage rating, to guarantee circuit compatibility and safety performance.
