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MF-RHT550-0
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Product Detailed Parameters
- Description：PTC RESET FUSE 16V 5.5A RADIAL
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Bag
- 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 MF-RHT550-0 is a high-temperature polymeric positive temperature coefficient (PPTC) resettable fuse manufactured by Bourns Inc. Designed for radial through-hole mounting, this component provides overcurrent protection in demanding electronic environments. It features a maximum operating voltage of 16V and a hold current of 5.5A, with a trip current rating of 10A. The device exhibits low initial resistance of 15 mOhms and is qualified under the AEC-Q200 automotive standard, ensuring reliability for automotive applications.
Feature Summary
- High-temperature PTC technology for reliable circuit protection
- Radial leaded construction for PCB integration
- AEC-Q200 qualification for automotive grade compliance
Applications
- Automotive electronics circuits
- Power supply input protection
- Signal line surge suppression
Procurement Notes
Verify that the specific part number matches the required hold current and voltage ratings for your design. Confirm the AEC-Q200 qualification status if automotive application is intended. Ensure the radial package dimensions fit the PCB layout constraints. Cross-reference the datasheet for thermal derating curves to guarantee performance under actual operating conditions.
Selection Notes
Select this component when low-voltage, high-current protection is required in space-constrained designs. The radial form factor simplifies manual assembly or wave soldering processes. Consider the 16V rating limit when designing for slightly higher voltage rails. The AEC-Q200 certification makes it suitable for strict automotive quality requirements compared to general industrial fuses.
Part Context
This component belongs to Bourns' MF-RHT series of high-temperature resettable fuses. These devices utilize polymeric technology to provide automatic reset functionality after fault clearance. The series is engineered to withstand elevated temperatures while maintaining stable electrical characteristics, distinguishing it from standard PPTC devices used in consumer electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing footprints before sourcing alternatives.
