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MF-SM150/33-2-99
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Product Detailed Parameters
- Description：PTC RESET FUSE 33V 1.5A 2SMD
- Series：Multifuse®, MF-SM
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：33V
- Current - Hold (Ih) (Max)：1.5 A
- Current - Trip (It)：3:00 AM
- Current - Max：40 A
- Time to Trip：5 s
- Resistance - Initial (Ri) (Min)：60 mOhms
- Resistance - Post Trip (R1) (Max)：230 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：2-SMD
- Size / Dimension：0.344" L x 0.264" W (8.75mm x 6.71mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.118" (3.00mm)
- Lead Spacing：-
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Overview
The MF-SM150/33-2-99 is a polymeric PTC resettable fuse from the Bourns MF-SM series, designed for surface mount circuit protection. It features a maximum voltage of 33 VDC and a hold current of 1.5 A. The device trips at 3.0 A with a trip time of 5 seconds and withstands a maximum rated current of 40 A. Initial resistance is 230 mΩ max. It operates within a temperature range of -40°C to +85°C and is housed in a 2920 (7450 metric) package.
Feature Summary
- Polymeric positive temperature coefficient construction for self-resetting overcurrent protection
- Surface mount design compatible with automated assembly processes
- RoHS compliant lead-free manufacturing
Applications
- Portable electronic devices requiring compact circuit protection
- Consumer electronics interfaces
- Data communication ports
Procurement Notes
Verify component availability as this specific part number may be obsolete or discontinued by the manufacturer. Confirm that substitute components meet identical electrical specifications including voltage, current ratings, and physical dimensions. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.
Selection Notes
Select this component when a low-profile surface mount resettable fuse is required for 33V circuits. The 1.5A hold current suits moderate load applications. Verify that the 2920 package fits the board space constraints. Consider thermal derating factors if operating near the upper temperature limit of 85°C.
Part Context
This component belongs to the Bourns MF-SM series of high-density polymeric PTC fuses. The series offers various hold currents and voltage ratings in standardized surface mount packages. The MF-SM150/33-2-99 specifically targets applications needing robust protection in limited space.
Replacement Considerations
DigiKey lists available substitutes for this obsolete part. Verify that any replacement matches the 33V rating, 1.5A hold current, and 2920 package size. Ensure the substitute maintains similar trip characteristics and thermal performance.
