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MICROSMD200LR-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 2A 1210
- Series：PolySwitch®, LoRho
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：2:00 AM
- Current - Trip (It)：5:00 AM
- Current - Max：50 A
- Time to Trip：4 s
- Resistance - Initial (Ri) (Min)：6 mOhms
- Resistance - Post Trip (R1) (Max)：-
- Resistance - 25°C (Typ)：-
- Operating Temperature：-
- 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 MICROSMD200LR-2 is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse from the Littelfuse microSMD series. It features a maximum operating voltage of 6V DC and a hold current of 2A. The device trips at 4A with a maximum trip time of 2.5 seconds. It offers a low initial resistance of 20mΩ and a maximum post-trip resistance of 60mΩ. Rated for a maximum fault current of 100A, it operates within a temperature range of -40°C to +85°C. The component is housed in a 1210 (3225 metric) package with dimensions of 3.22mm x 2.58mm.
Feature Summary
- Polymeric PTC technology provides automatic circuit protection that resets upon cooling.
- Low resistance design minimizes power loss during normal operation.
- Compact surface-mount footprint suitable for space-constrained applications.
Applications
- Portable electronic devices
- Battery packs
- Peripheral circuits
Procurement Notes
Verify the specific suffix 'LR' indicates the Low Resistance variant, as standard MICROSMD200F-2 differs. Confirm RoHS compliance status and MSL rating before assembly. Check datasheet for derating curves relevant to ambient temperature conditions.
Selection Notes
Select this part for low-voltage applications requiring high hold current in a small package. Ensure the circuit's normal operating current remains below the 2A hold rating. Verify that the expected fault current does not exceed the 100A maximum limit to prevent device rupture.
Part Context
This component belongs to the microSMD family of resettable fuses. It shares the same physical package dimensions as other variants in the series but is distinguished by its specific electrical characteristics, particularly the low resistance profile and higher current ratings compared to lower-current counterparts.
Replacement Considerations
MICROSMD200F-2 is a related part number within the same series but typically exhibits higher resistance values. Substitution requires verification of electrical parameter compatibility, specifically regarding hold current and resistance limits.
