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MF-RHT050-AP
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 500MA RADIAL
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Bulk
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：500 mA
- Current - Trip (It)：920 mA
- Current - Max：40 A
- Time to Trip：2.5 s
- Resistance - Initial (Ri) (Min)：480 mOhms
- Resistance - Post Trip (R1) (Max)：1.1 Ohms
- Operating Temperature：-40°C ~ 125°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.291" Dia x 0.118" T (7.40mm x 3.00mm)
- Height - Seated (Max)：0.500" (12.70mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The MF-RHT050-AP is a polymeric PTC resettable fuse from the Bourns MF-RHT series, designed for through-hole radial mounting. It features a holding current of 500 mA and a trip current of 920 mA, with a maximum voltage rating of 30 VDC. The device supports a maximum fault current of 40 A and exhibits a typical resistance of 120 ohms. It operates within a temperature range of -40°C to +125°C and complies with AEC-Q200 standards for automotive applications.
Feature Summary
- Provides overcurrent protection through automatic resistance increase upon thermal activation
- Complies with AEC-Q200 qualification standards for automotive circuit reliability
- Features radial leaded construction suitable for PCB mounting
Applications
- Automotive electronic circuit protection
- Overcurrent safeguarding in low-voltage DC systems
- Protection of sensitive components in automotive grade assemblies
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number MF-RHT050-AP with official Bourns documentation. Confirm that the specific suffix indicates the correct axial or radial configuration and packaging type required for your assembly process. Ensure compliance with AEC-Q200 requirements if deploying in automotive environments.
Selection Notes
Select this component when a 500 mA holding current and 30 VDC rating are required for overcurrent protection. Consider the AEC-Q200 compliance for automotive use cases. Evaluate the 120 ohm resistance and 40 A max current capabilities against circuit fault conditions. Ensure the radial package fits the available PCB footprint and mounting constraints.
Part Context
This part belongs to the MF-RHT series of high-temperature PTC resettable fuses manufactured by Bourns Inc. The series is engineered for robust performance in demanding environments, offering reliable resettable protection compared to one-time fuses. The MF-RHT designation specifically denotes the radial leaded variant within this product family.
Replacement Considerations
Direct substitutes include other AEC-Q200 qualified PTC fuses with matching 500 mA holding current and 30 VDC ratings. Verify physical dimensions and lead spacing compatibility before substitution. Alternative parts must maintain similar trip characteristics and thermal recovery profiles.
