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MF-USMF175X-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 1.75A 1210
- Series：Multifuse®, MF-USMF
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：-
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：1.75 A
- Current - Trip (It)：3.5 A
- Current - Max：40 A
- Time to Trip：1 s
- Resistance - Initial (Ri) (Min)：-
- Resistance - Post Trip (R1) (Max)：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), Concave
- Size / Dimension：0.127" L x 0.102" W (3.22mm x 2.58mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.033" (0.85mm)
- Lead Spacing：-
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Overview
The Bourns MF-USMF175X-2 is a surface-mount PTC resettable fuse from the Multifuse series, designed for circuit protection. It features a hold current of 1.75 A and a trip current of 3.5 A, with a maximum voltage rating of 6 VDC. The device supports a maximum fault current of 40 A and typically trips within one second under specified conditions. Packaged in a 1210 (3225 Metric) concave case, it operates between -40°C and +85°C. This component provides reliable overcurrent protection for low-voltage electronic applications.
Feature Summary
- Provides automatic circuit interruption upon detection of overcurrent conditions to prevent damage
- Features a concave surface mount package design optimized for automated assembly processes
- Delivers rapid response to fault events through positive temperature coefficient material properties
Applications
- Low-voltage portable electronics protection
- Consumer device power input circuits
- Battery pack overcurrent safeguarding
Procurement Notes
Verify that the specific application voltage does not exceed the 6 VDC maximum rating to ensure proper operation. Confirm that the expected operating current remains below the 1.75 A hold current threshold during normal conditions. Ensure the PCB footprint matches the 1210 concave package dimensions. Check that ambient temperatures stay within the -40°C to +85°C operational range for reliable performance.
Selection Notes
Select this component when designing circuits requiring protection at voltages up to 6 VDC. Consider the 40 A maximum fault current capability for handling short-circuit scenarios. Evaluate the 1210 package size against available board space constraints. Verify compatibility with reflow soldering profiles suitable for surface mount devices.
Part Context
This part belongs to the Bourns MF-USMF Multifuse series, which specializes in polymer resettable fuses for surface mount applications. The series offers various current ratings and voltage options tailored for different circuit protection needs. These components are widely used in consumer electronics and industrial equipment where compact, reusable protection is required.
Replacement Considerations
Consult official Bourns documentation for direct cross-reference substitutes. Verify that any alternative maintains identical voltage, current, and package specifications.
