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MF-RHT300-AP-14
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Product Detailed Parameters
- Description：PTC 3.0A 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)：3:00 AM
- Current - Trip (It)：6:00 AM
- Current - Max：100 A
- Time to Trip：5 s
- Resistance - Initial (Ri) (Min)：33 mOhms
- Resistance - Post Trip (R1) (Max)：79 mOhms
- Operating Temperature：-40°C ~ 125°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.346" L x 0.118" W (8.80mm x 3.00mm)
- Height - Seated (Max)：0.543" (13.80mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The MF-RHT300-AP-14 is a polymeric positive temperature coefficient (PPTC) resettable fuse manufactured by Bourns Inc. Designed for through-hole radial mounting, this component provides circuit protection against overcurrent conditions in automotive and industrial applications. It features a hold current of 3A and a trip current of 6A at a maximum voltage rating of 16VDC. The device operates within a temperature range of -40°C to +125°C and possesses a minimum breaking capacity of 100A. With a typical resistance of 79 milliohms and dimensions of 8.8mm length by 3mm height, it meets AEC-Q200 qualification standards for automotive reliability.
Feature Summary
- Provides automatic resettable overcurrent protection using polymeric PTC technology
- Qualified for automotive environments under AEC-Q200 standards
- Supports high-temperature operation up to 125°C for robust performance
- Features radial leaded construction for standard PCB mounting
Applications
- Automotive electronic circuit protection
- Battery pack overcurrent safeguarding
- Industrial control system circuitry
- Consumer electronics power line protection
Procurement Notes
Verify the specific suffix AP-14 to ensure correct packaging and tape configuration. Confirm that the AEC-Q200 qualification aligns with target automotive requirements. Check datasheet for precise thermal derating curves relevant to the operating environment. Ensure radial lead spacing matches the printed circuit board layout specifications before finalizing procurement orders.
Selection Notes
Select this component when a 3A hold current and 16VDC rating are required for compact circuit protection. Consider the 79 milliohm resistance for low-power loss applications. Evaluate the 100A breaking capacity against potential fault currents. The radial package suits automated insertion processes. Verify ambient temperature constraints do not exceed the 125°C maximum operating limit during normal usage.
Part Context
This part belongs to the MF-RHT series of high-temperature resettable fuses from Bourns. The series is engineered for demanding environments where standard components may fail. The MF-RHT300 variant specifically targets applications requiring reliable protection at higher temperatures compared to standard PTC devices. The radial form factor ensures compatibility with traditional through-hole manufacturing techniques.
Replacement Considerations
Direct substitutes include other Bourns MF-RHT series parts with matching electrical ratings. Cross-reference hold current, trip current, and voltage ratings strictly. Verify physical dimensions and lead spacing for mechanical fit. Ensure replacement components also meet AEC-Q200 if automotive qualification is mandatory. Generic PTC fuses may lack the specific thermal characteristics of this series.
