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MF-USHT175KX/12-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 12V 1.75A 1210
- Series：Multifuse®, MF-USHT
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：12V
- Current - Hold (Ih) (Max)：1.75 A
- Current - Trip (It)：5.25 A
- Current - Max：40 A
- Time to Trip：5 s
- Resistance - Initial (Ri) (Min)：18 mOhms
- Resistance - Post Trip (R1) (Max)：170 mOhms
- Operating Temperature：-40°C ~ 125°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), Concave
- Size / Dimension：0.135" L x 0.110" W (3.43mm x 2.80mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.055" (1.40mm)
- Lead Spacing：-
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Overview
The Bourns MF-USHT175KX/12-2 is a high-temperature polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-USHT series. Designed for through-hole mounting, this component provides overcurrent protection in demanding environments. It features a holding current of 12A and a trip current of 17.5A. The device operates within an extended temperature range, supporting maximum working temperatures up to +175°C. It utilizes standard axial lead termination for secure PCB integration.
Feature Summary
- Provides automatic circuit reset after fault clearance without manual replacement
- Engineered with enhanced thermal stability for sustained operation at elevated temperatures
- Offers robust protection against overcurrent conditions and excessive heat generation
Applications
- Automotive electronics systems requiring high thermal resilience
- Industrial control equipment operating in harsh environments
- Power supply units needing reliable overcurrent safeguarding
Procurement Notes
Verify that the specific suffix indicates the correct current ratings and package configuration for your design requirements. Confirm compliance with relevant automotive or industrial standards if applicable. Ensure the through-hole footprint matches your printed circuit board layout specifications before finalizing procurement orders.
Selection Notes
Select this component when applications demand resettable protection capable of withstanding extreme thermal stress. Consider the specific holding and trip currents required for your circuit's normal and fault conditions. Evaluate the physical size constraints and lead spacing to ensure compatibility with existing assembly processes and board density requirements.
Part Context
This part belongs to Bourns' MF-USHT series, which expands their portfolio of high-temperature PPTC devices. The series addresses the need for reliable protection in sectors where standard components may fail due to heat. It complements other Bourns circuit protection solutions by offering a durable, reusable alternative to traditional fuses in high-stress scenarios.
Replacement Considerations
Consult official substitution guides for direct equivalents. Verify that any substitute maintains the same voltage rating, current characteristics, and thermal performance capabilities to ensure circuit integrity and safety compliance.
