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MF-RHT400-0
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Product Detailed Parameters
- Description：PTC RESET FUSE 16V 4A RADIAL
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Bag
- Type：Polymeric
- Voltage - Max：16V
- Current - Hold (Ih) (Max)：4:00 AM
- Current - Trip (It)：7.5 A
- Current - Max：100 A
- Time to Trip：5 s
- Resistance - Initial (Ri) (Min)：24 mOhms
- Resistance - Post Trip (R1) (Max)：60 mOhms
- Operating Temperature：-40°C ~ 125°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.394" L x 0.118" W (10.00mm x 3.00mm)
- Height - Seated (Max)：0.591" (15.00mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RHT400-0 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse designed for high-temperature applications. It belongs to the MF-RHT series and features a holding current of 4 A with a maximum voltage rating of 16 V. The device exhibits a typical resistance of 240 mΩ and operates within a temperature range of -40°C to +125°C. It carries AEC-Q200 qualification, indicating suitability for automotive environments, and is supplied in bulk packaging.
Feature Summary
- Radial leaded construction for PCB mounting
- High-temperature capability up to +125°C
- AEC-Q200 qualified for automotive reliability
Applications
- Automotive electronics protection
- PCB overcurrent protection circuits
- High-temperature industrial applications
Procurement Notes
Verify availability status as distribution channels may indicate regional sales restrictions or discontinuation. Confirm that the AEC-Q200 qualification aligns with specific automotive project requirements. Ensure the 16 V maximum voltage rating is sufficient for the target circuit's operating conditions. Check for any specific handling instructions related to the bulk packaging format during assembly.
Selection Notes
Select this component when a 4 A holding current and 16 V rating are required in a compact radial package. The AEC-Q200 qualification makes it appropriate for automotive systems where reliability under thermal stress is critical. Consider the 240 mΩ resistance impact on circuit efficiency. Verify that the +125°C maximum operating temperature meets the environmental constraints of the installation site.
Part Context
This part is part of the Bourns MF-RHT series of resettable fuses. The series is characterized by its ability to withstand high temperatures, making it distinct from standard PTC devices. The MF-RHT400-0 specifically targets applications requiring robust overcurrent protection in demanding thermal environments, leveraging polymer technology for automatic reset functionality after fault clearance.
Replacement Considerations
Consult official Bourns documentation for direct cross-references. Ensure any substitute maintains the 4 A holding current, 16 V rating, and AEC-Q200 qualification if automotive use is intended. Verify compatibility with radial leaded PCB mounting and similar thermal characteristics.
