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MF-SMDF050-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 60V 550MA 2018
- Series：Multifuse®, MF-SMDF
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：60V
- Current - Hold (Ih) (Max)：550 mA
- Current - Trip (It)：1.2 A
- Current - Max：10:00 AM
- Time to Trip：3 s
- Resistance - Initial (Ri) (Min)：200 mOhms
- Resistance - Post Trip (R1) (Max)：1 Ohms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：2018 (5045 Metric), Concave
- Size / Dimension：0.200" L x 0.180" W (5.08mm x 4.58mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.043" (1.09mm)
- Lead Spacing：-
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Overview
The Bourns MF-SMDF050-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse from the MF-SMDF series. It features a 60V maximum voltage rating and a 0.55A hold current, with a trip current of 1.2A occurring within 3 seconds. The device has a maximum resistance of 1Ω and operates between -40°C and +85°C. Its compact 1812 package measures 5.44mm in length, 4.93mm in width, and 1.09mm in height.
Feature Summary
- Provides overcurrent protection through automatic resistance increase during fault conditions
- Offers reusable circuit protection without requiring manual replacement after tripping
- Designed for surface mount assembly to support automated manufacturing processes
Applications
- Portable electronic devices requiring compact overcurrent protection
- Consumer electronics circuits needing reusable safety components
- Industrial equipment power supply lines
Procurement Notes
Verify component authenticity by checking manufacturer markings against official datasheets. Confirm RoHS compliance status for environmental regulations. Ensure storage conditions maintain material integrity before soldering. Validate package dimensions match PCB footprint requirements precisely.
Selection Notes
Select this component when space constraints require an 1812 SMD form factor. Choose based on the specific 60V voltage rating and 0.55A hold current needs. Consider the thermal operating range limits for the intended environment. Evaluate the trade-off between trip speed and steady-state current capacity.
Part Context
This part belongs to Bourns' Multifuse PPTC resettable fuse family. These components utilize polymer technology to provide reliable circuit protection. The series is designed for applications demanding robust overcurrent defense in limited spaces.
Replacement Considerations
Consult official substitution guides for compatible alternatives. Verify electrical parameters match exactly before swapping. Check package compatibility to ensure physical fitment.
