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MF-RHT450-2-14
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Product Detailed Parameters
- Description：PTC 4.5A 16V RADIAL LEADED HI-TE
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- Type：Polymeric
- Voltage - Max：16V
- Current - Hold (Ih) (Max)：4.5 A
- Current - Trip (It)：7.8 A
- Current - Max：100 A
- Time to Trip：3 s
- Resistance - Initial (Ri) (Min)：22 mOhms
- Resistance - Post Trip (R1) (Max)：54 mOhms
- Operating Temperature：-40°C ~ 125°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.409" L x 0.118" W (10.40mm x 3.00mm)
- Height - Seated (Max)：0.614" (15.60mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The MF-RHT450-2-14 is a polymeric resettable fuse from Bourns Inc., designed for high-temperature applications. It features a hold current of 4.5A and a trip current of 100A, with a maximum voltage rating of 16V. The component utilizes radial leaded packaging with a lead spacing of 0.201 inches (5.10mm). It complies with the AEC-Q200 qualification standard, ensuring reliability in automotive environments. The device offers a time-to-trip characteristic of 3 seconds under specified conditions.
Feature Summary
- Polymeric construction for resettable overcurrent protection
- Qualified to AEC-Q200 automotive standards
- Radial leaded package suitable for through-hole mounting
Applications
- Automotive electronics circuit protection
- High-temperature industrial equipment safeguarding
- Consumer electronics power line defense
Procurement Notes
Verify the specific suffix against official Bourns documentation to confirm exact electrical ratings and physical dimensions. Ensure the procurement channel provides valid manufacturer traceability. Confirm that the delivered components match the AEC-Q200 qualification requirements stated in the datasheet. Check for any specific handling instructions regarding high-temperature performance limits.
Selection Notes
Select this component when a 4.5A hold current and 16V maximum voltage are required for radial through-hole applications. Consider the AEC-Q200 qualification if the application involves automotive systems. Evaluate the thermal environment to ensure the high-temperature rating aligns with operational constraints. Compare the 100A trip current capability against potential fault scenarios to ensure adequate protection levels.
Part Context
This part belongs to the MF-RHT series of high-temperature PTC resettable fuses by Bourns Inc. The series is engineered for robust performance in demanding thermal conditions. The MF-RHT450-2-14 variant specifically targets applications requiring precise current limiting within automotive and industrial sectors. Its design emphasizes durability and consistent resettable behavior after fault clearance.
Replacement Considerations
Consult official Bourns substitution guides for verified alternatives. Cross-reference hold current, voltage rating, and package dimensions before replacing. Ensure any substitute maintains AEC-Q200 compliance if used in automotive contexts. Verify thermal characteristics match the original design specifications.
