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MF-SM100/33-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 33V 1.1A 2SMD
- Series：Multifuse®, MF-SM
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Type：Polymeric
- Voltage - Max：33V
- Current - Hold (Ih) (Max)：1.1 A
- Current - Trip (It)：2.2 A
- Current - Max：40 A
- Time to Trip：500 ms
- Resistance - Initial (Ri) (Min)：120 mOhms
- Resistance - Post Trip (R1) (Max)：410 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 Bourns MF-SM100/33-2 is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse from the Multifuse SM series. Designed for high-density circuit protection, this component features a hold current of 1.0 A and a trip current of 2.0 A. It supports a maximum voltage rating of 33 VDC and can withstand a maximum rated current of 40 A. The device exhibits a typical resistance of 150 mΩ and operates within a temperature range of -40°C to +85°C. Packaged in a compact 2920 (7450 metric) SMD footprint, it provides reliable overcurrent protection for space-constrained electronic assemblies.
Feature Summary
- Self-resetting overcurrent protection utilizing polymeric PPTC technology
- Surface-mount design optimized for automated SMD/SMT assembly processes
- High surge current capability with rapid response to fault conditions
Applications
- Portable consumer electronics battery packs
- USB peripheral and interface port protection
- Automotive infotainment and sensor modules
- Industrial control board input/output circuits
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure that the selected variant matches the required hold current and voltage ratings for the target application. Confirm RoHS compliance status and check for any recent lifecycle changes or recommended replacement parts before finalizing procurement orders.
Selection Notes
Select this component based on the required hold current of 1.0 A and the system's maximum operating voltage of 33 VDC. Consider the thermal environment, as the trip characteristic depends on ambient temperature. Verify that the PCB copper pad layout supports the 2920 package dimensions to ensure proper soldering and thermal dissipation during normal operation and fault events.
Part Context
This part belongs to the Bourns Multifuse SM series, which focuses on surface-mount resettable fuses for modern electronics. The series offers various hold currents and voltage ratings to suit different circuit requirements. The MF-SM100/33-2 specifically addresses applications needing compact protection with moderate current handling capabilities.
Replacement Considerations
Consult the official Bourns replacement guide for direct equivalents. Cross-reference parameters such as hold current, trip current, and maximum voltage when evaluating alternative components from other manufacturers.
