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MF-RHS450-0
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Product Detailed Parameters
- Description：FUSE PTC RESET 4.50A 16V
- Series：Multifuse®, MF-RHS
- Mfr：Bourns Inc.
- Package：Bulk
- Type：Polymeric
- Voltage - Max：16V
- Current - Hold (Ih) (Max)：4.5 A
- Current - Trip (It)：9:00 AM
- Current - Max：100 A
- Time to Trip：5.5 s
- Resistance - Initial (Ri) (Min)：0.0145 Ohms
- Resistance - Post Trip (R1) (Max)：0.04 Ohms
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.331" L x 0.118" W (8.40mm x 3.00mm)
- Height - Seated (Max)：0.744" (18.90mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RHS450-0 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse designed for high-temperature applications. It belongs to the MF-RHS series and features a maximum holding current of 4.5 A at a maximum voltage of 16 V. The device has a trip current of 9 A, a maximum fault current rating of 100 A, and a typical resistance of 14.5 mΩ. It operates within a temperature range of -40°C to +125°C with a lead spacing of 5.1 mm.
Feature Summary
- Provides overcurrent protection through automatic resistance increase during fault conditions
- Designed for reliable operation in high-temperature environments up to 125°C
- Features radial leaded construction for through-hole PCB mounting
Applications
- High-temperature circuit protection in industrial electronics
- Overcurrent safeguarding in automotive auxiliary circuits
- Protection for consumer electronic devices requiring thermal resilience
Procurement Notes
Verify the specific suffix and package configuration against the manufacturer's official datasheet before ordering. Confirm that the required holding current and voltage ratings align with the system design parameters. Ensure compatibility with through-hole assembly processes and verify compliance with relevant environmental standards such as RoHS requirements for the intended market.
Selection Notes
Select this component when a low-voltage, high-current resettable fuse is required for through-hole implementation. The 4.5 A holding current and 16 V rating suit low-voltage DC systems. Consider the 125°C operating limit for environments with elevated ambient temperatures. Compare against the MF-RHT series if automotive qualification (AEC-Q200) is mandatory, as the MF-RHS series does not list this certification.
Part Context
This part is a member of the Bourns MF-RHS series of high-temperature PPTC resettable fuses. It serves as a reusable alternative to traditional one-time fuses in low-voltage applications. The radial leaded format facilitates easy integration into printed circuit boards where space constraints are less critical than thermal performance and ease of replacement.
Replacement Considerations
Direct substitutes include other MF-RHS series variants with different current ratings, such as MF-RHS350-0 or MF-RHS500-0, provided the electrical parameters match the application needs. Cross-series replacement with MF-RHT models requires verification of automotive qualification requirements.
