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MF-RHT550-0-14
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Product Detailed Parameters
- Description：PTC 5.5A 16V RADIAL LEADED HI-TE
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Bulk
- Type：Polymeric
- Voltage - Max：16V
- Current - Hold (Ih) (Max)：5.5 A
- Current - Trip (It)：10:00 AM
- Current - Max：100 A
- Time to Trip：6 s
- Resistance - Initial (Ri) (Min)：15 mOhms
- Resistance - Post Trip (R1) (Max)：37 mOhms
- Operating Temperature：-40°C ~ 125°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.441" L x 0.118" W (11.20mm 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-RHT550-0-14 is a high-temperature polymeric positive temperature coefficient (PPTC) resettable fuse designed for circuit protection. It features radial leaded mounting and operates within a temperature range of -40°C to +125°C. The device maintains a holding current of 5.5 A at 16 V maximum voltage, with a trip current of 10 A. It offers a maximum fault current rating of 100 A and exhibits a typical resistance of 37 mΩ. The component utilizes a 5.1 mm lead spacing and is supplied in reel packaging.
Feature Summary
- High-temperature capability suitable for demanding thermal environments
- Radial leaded construction for through-hole PCB integration
- Self-resetting functionality upon cooling after fault clearance
Applications
- Overcurrent protection in high-temperature electronic circuits
- Protection for battery packs and power supply lines
- Industrial equipment requiring robust thermal resilience
Procurement Notes
Verify the specific suffix '0' against the manufacturer's official datasheet to confirm exact electrical tolerances and physical dimensions. Ensure the radial lead configuration matches the target PCB footprint requirements. Confirm that the 16 V maximum voltage rating aligns with the system's operational limits before integration.
Selection Notes
Select this component when high ambient temperatures exceed standard PTC capabilities. The 5.5 A holding current suits moderate load protection needs. Verify that the 100 A interrupting capacity meets the prospective fault current levels of the protected circuit branch to ensure adequate safety margins during short-circuit events.
Part Context
This part belongs to the MF-RHT series, which specializes in high-temperature PPTC devices. The series extends Bourns' portfolio of thermal protection solutions, offering enhanced stability compared to standard variants. The radial leaded format facilitates manual assembly or wave soldering processes in industrial manufacturing contexts.
Replacement Considerations
Consult the official Bourns MF-RHT series cross-reference guide for verified substitutes. Direct replacements must match the 5.5 A holding current, 16 V rating, and radial package form factor to maintain circuit integrity and thermal performance specifications.
