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MICROSMD600LR-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 6A 1210
- Series：PolySwitch®, microSMD
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：6:00 AM
- Current - Trip (It)：12:00 AM
- Current - Max：50 A
- Time to Trip：2 s
- Resistance - Initial (Ri) (Min)：2 mOhms
- Resistance - Post Trip (R1) (Max)：6.3 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 80°C
- 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)：0.039" (1.00mm)
- Lead Spacing：-
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Overview
The MICROSMD600LR-2 is a PolySwitch resettable fuse from the microSMD series, designed for surface-mount applications. It features a low resistivity construction with a maximum holding current of 6.0 A and a trip current of 12.0 A. Rated for 6 VDC, it supports a maximum fault current (Imax) of 40 A. The device operates within a temperature range of -40°C to +85°C and dissipates up to 1 W. Its compact 1210 package measures 3.43 mm in length, 2.8 mm in width, and 0.48 mm in height.
Feature Summary
- Low resistivity design minimizes voltage drop and power loss during normal operation.
- Compact 1210 surface-mount footprint enables efficient PCB space utilization.
- Automatic reset functionality restores circuit continuity after fault conditions clear.
Applications
- Portable electronics battery protection
- USB port overcurrent protection
- Laptop peripheral circuit safeguarding
Procurement Notes
Verify component authenticity through authorized Littelfuse distributors or certified partners. Confirm RoHS compliance and lead-free status via official documentation. Check manufacturing date codes and moisture sensitivity levels prior to assembly. Ensure storage conditions meet JANS standards to prevent degradation. Validate part number suffixes against current datasheets to confirm availability.
Selection Notes
Select this component when high holding current and low resistance are required in a small SMD package. Evaluate thermal dissipation requirements as the device handles up to 1 W. Consider the 6 VDC rating for low-voltage digital circuits. Verify that the 40 A Imax capability matches potential fault currents in the target application.
Part Context
This part belongs to the microSMD family of PolySwitch resettable fuses. It utilizes polymer positive temperature coefficient technology. The series offers various current ratings in standardized surface-mount packages. This specific model provides higher current capacity compared to standard microSMD variants.
Replacement Considerations
MICROSMD600F-2 serves as a direct functional substitute within the same series. Both share identical 1210 dimensions and 6 VDC ratings. Verify that the trip current characteristics of the alternative part align with circuit protection requirements before substitution.
