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MF-RHT050-2-17
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Product Detailed Parameters
- Description：PTC 0.5A 16V RADIAL LEADED HI-TE
- Series：Multifuse®, MF-RHT
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- 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 Bourns MF-RHT050-2-17 is a radial leaded polymer positive temperature coefficient (PPTC) resettable fuse from the MF-RHT series, designed for high-temperature circuit protection. It features a hold current of 0.5 A and a trip current of 1.0 A, operating within a voltage range up to 30 V. The device offers a maximum fault current rating of 40 A and exhibits a typical resistance of 800 mΩ. It supports an operating temperature range from -40°C to +125°C with a lead spacing of 5.1 mm, providing robust overcurrent protection in demanding thermal environments.
Feature Summary
- Provides automatic resettable overcurrent protection using polymer PTC technology
- Engineered for reliable operation in high-temperature environments up to 125°C
- Eliminates nuisance tripping caused by ambient temperature fluctuations
- Offers compact radial leaded packaging for efficient PCB integration
Applications
- Automotive electronic circuit protection
- Industrial equipment surge and overcurrent safeguarding
- Communication systems requiring high-reliability fault protection
- Consumer electronics needing compact thermal management
Procurement Notes
Verify component authenticity through authorized Bourns distributors or direct manufacturer channels. Confirm RoHS compliance status via the official material data sheet prior to procurement. Ensure storage conditions maintain integrity against moisture and physical damage. Validate that the specific reel or tube packaging aligns with automated assembly requirements. Cross-reference ordering suffixes to confirm exact electrical characteristics match design specifications.
Selection Notes
Select this component when applications demand high-temperature resilience combined with resettable functionality. The 0.5 A hold current suits low-power signal lines or control circuits. Verify that the 30 V maximum voltage rating exceeds the system's peak operational voltage. Consider the 800 mΩ resistance impact on signal integrity or power loss. Ensure the radial lead form factor fits the available board space and mounting constraints compared to surface mount alternatives.
Part Context
This part belongs to the MF-RHT series, which expands Bourns' portfolio of high-temperature PPTC devices. These components utilize specialized polymer materials to withstand elevated thermal stresses without degrading. The series complements standard multifuse products by offering enhanced durability for automotive and industrial sectors where ambient temperatures frequently exceed conventional limits.
Replacement Considerations
Consult official Bourns substitution guides for verified equivalents. Generic PPTC fuses may lack the specific high-temperature stability required. Ensure substitute parts match the 0.5 A hold current and 30 V rating precisely. Verify that alternative radial leaded packages maintain compatible pin spacing for existing footprints.
