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MF-SM100-2-99
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 1.1A 2SMD
- Series：Multifuse®, MF-SM
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：1.1 A
- Current - Trip (It)：2.2 A
- Current - Max：80 A
- Time to Trip：500 ms
- Resistance - Initial (Ri) (Min)：120 mOhms
- Resistance - Post Trip (R1) (Max)：480 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：2-SMD
- Size / Dimension：0.287" L x 0.214" W (7.31mm x 5.44mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.118" (3.00mm)
- Lead Spacing：-
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Overview
The MF-SM100-2-99 is an automotive-grade polymeric PTC resettable fuse from Bourns Inc. designed for surface-mount circuit protection. It features a hold current of 1.1 A and trip current of 2.2 A with a maximum voltage rating of 30 V. The device exhibits an initial resistance minimum of 120 mOhms and a post-trip resistance maximum of 480 mOhms. It operates within a temperature range of -40°C to 85°C, ensuring reliable performance in demanding automotive environments.
Feature Summary
- Polymeric positive temperature coefficient construction for automatic reset functionality after fault clearance
- Automotive grade certification ensures compliance with rigorous reliability standards
- Surface-mount package design facilitates automated assembly and compact PCB integration
Applications
- Automotive electronic circuit protection
- Overcurrent safeguarding in vehicle power systems
- Protection of sensitive automotive control modules
Procurement Notes
Verify the specific suffix codes against official Bourns documentation to confirm exact electrical characteristics and packaging specifications. Ensure that the procurement channel provides valid manufacturer traceability and quality certificates. Cross-reference the part number with the latest datasheet revisions to avoid discrepancies in hold or trip parameters during sourcing.
Selection Notes
Select this component when automotive-grade reliability and surface-mount form factors are required. Evaluate the 1.1 A hold current and 30 V rating against the target circuit's normal operating conditions. Consider the thermal environment constraints defined by the -40°C to 85°C operating range to ensure proper function under all expected load scenarios.
Part Context
This part belongs to the MF-SM series of resettable fuses, which are widely utilized in automotive applications. The series offers various current ratings and package options to suit different circuit protection needs. The MF-SM100-2-99 specifically addresses requirements for low-resistance, high-reliability protection in space-constrained automotive electronics.
Replacement Considerations
Consult official Bourns substitution guides for compatible alternatives within the MF-SM family. Verify that any substitute maintains identical voltage, current, and temperature ratings. Ensure cross-compatibility with existing PCB footprints and reflow soldering profiles before implementation.
