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MF-RHT400-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 16V 4A RADIAL
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 MF-RHT400-2 is a polymeric PTC resettable fuse from Bourns, designed for high-temperature applications. It features a maximum voltage rating of 16V and a hold current (Ih) of 4A. The trip current (It) is specified at 7.5A. The component utilizes a radial leaded disc package and is AEC-Q200 compliant. Initial resistance is minimum 24mΩ, with power dissipation rated at 3.3W.
Feature Summary
- Polymeric positive temperature coefficient construction for overcurrent protection
- Radial leaded disc package suitable for through-hole mounting
- AEC-Q200 qualified for automotive reliability standards
- High-temperature design capability
Applications
- Automotive electronic circuit protection
- Power supply input protection
- Battery pack overcurrent safeguarding
- Industrial control system circuits
Procurement Notes
Verify the specific ordering suffix to confirm the exact holding current and voltage ratings, as variations exist within the MF-RHT series. Ensure the procurement documentation explicitly states AEC-Q200 compliance if automotive qualification is required. Confirm the package type matches the radial leaded specification for proper PCB footprint compatibility.
Selection Notes
Select this component when a low-profile, high-current resettable fuse is needed for 16V systems. The 4A hold current suits moderate load protection scenarios. Consider the 7.5A trip threshold for fault detection sensitivity. Verify thermal derating requirements against the operating environment temperature range of -40°C to +85°C.
Part Context
This part belongs to the MF-RHT series of high-temperature PPTC resettable fuses by Bourns. The series is engineered for robust performance in demanding environments, offering reusable overcurrent protection compared to traditional one-time fuses. The radial form factor facilitates easy integration into various board layouts.
Replacement Considerations
Direct substitutes must match the 16V max voltage, 4A hold current, and radial package. Verify that any alternative component also meets AEC-Q200 standards if used in automotive contexts. Check physical dimensions for board space compatibility.
