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MF-RHT400-AP-14
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Product Detailed Parameters
- Description：PTC 4.0A 16V RADIAL LEADED HI-TE
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- 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-AP-14 is a resettable polymeric positive temperature coefficient (PPTC) device designed for overcurrent protection in electronic circuits. This specific model belongs to the RHT series, characterized by high thermal resistance and robust performance under demanding conditions. It functions as a self-resetting fuse, providing reliable circuit safeguarding without the need for manual replacement after fault clearance. The component is engineered to meet stringent industry standards for safety and durability.
Feature Summary
- Self-resetting functionality eliminates the need for manual fuse replacement after overcurrent events.
- High thermal resistance design ensures stable operation in elevated temperature environments.
- Polymeric positive temperature coefficient technology provides rapid response to fault currents.
- Compact form factor facilitates integration into space-constrained electronic assemblies.
Applications
- Overcurrent protection in portable consumer electronics
- Circuit safeguarding in automotive electronic modules
- Protection of battery packs in mobile devices
- Surge current limiting in industrial control systems
Procurement Notes
Verify the exact part number suffix against official Bourns documentation to ensure correct tape-and-reel packaging configuration. Confirm RoHS compliance status through the latest datasheet revision. Cross-reference lead times with authorized distributors as availability may fluctuate based on production schedules. Ensure storage conditions align with manufacturer recommendations to maintain material integrity prior to assembly.
Selection Notes
Select this component when high thermal stability and self-resetting capability are required for overcurrent protection. Evaluate the hold current and trip current parameters against the circuit's normal operating range to prevent nuisance tripping. Consider the maximum voltage rating and power dissipation characteristics relative to the application's fault conditions. Ensure the physical dimensions fit within the designated PCB footprint constraints.
Part Context
This device is part of Bourns' extensive portfolio of circuit protection components, specifically within the Multifuse family of PPTC resettable fuses. The RHT series is distinguished by its enhanced thermal performance compared to standard variants. Bourns designs these components to provide reliable, cost-effective protection solutions across various industries, including automotive, industrial, and consumer electronics markets.
Replacement Considerations
Consult official Bourns substitution guides for direct replacements. Verify that any substitute component matches the original's voltage, current, and thermal ratings. Ensure compatibility with existing PCB layouts and soldering processes. Do not assume interchangeability with other series without explicit manufacturer confirmation.
