MICROSMD110-2

$0.55

Description：PTC RESET FUSE 6V 1.1A 1210
Series：PolySwitch®, microSMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:7afd89c11453 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 6V 1.1A 1210
Series：PolySwitch®, microSMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：6V
Current - Hold (Ih) (Max)：1.1 A
Current - Trip (It)：2.2 A
Current - Max：40 A
Time to Trip：200 ms
Resistance - Initial (Ri) (Min)：70 mOhms
Resistance - Post Trip (R1) (Max)：210 mOhms
Resistance - 25°C (Typ)：-
Operating Temperature：-40°C ~ 85°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)：0.019" (0.48mm)
Lead Spacing：-

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MICROSMD110-2

Overview

The Littelfuse MICROSMD110-2 is a PolySwitch resettable PPTC fuse in the microSMD series, designed for surface-mount applications. It features a 1.1 A hold current and a 2.2 A trip current, with a maximum voltage rating of 6 VDC. The device has a maximum fault current rating (Imax) of 40 A and an initial resistance of 210 mOhms max. Housed in a compact 1210 package measuring 3.43 mm by 2.8 mm with a height of 0.48 mm, it operates within a temperature range of -40°C to +85°C and dissipates up to 800 mW.

Feature Summary

Provides reliable overcurrent protection through automatic resistance increase upon heating during fault conditions
Offers resettable functionality to restore circuit continuity after cooling without manual replacement
Utilizes low-profile surface-mount construction suitable for automated PCB assembly processes

Applications

Protection of portable electronic devices and handheld electronics
Overcurrent safeguarding for LED lighting circuits
Circuit protection in AC-DC and DC-DC power adapters
Defense against short circuits in networking equipment

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number MICROSMD110-2 with official Littelfuse documentation. Confirm that the received items match the specified 1210 package dimensions and electrical ratings. Ensure compliance with RoHS standards and check for moisture sensitivity handling requirements prior to soldering. Validate supplier authorization to guarantee original product integrity.

Selection Notes

Select this component when designing circuits requiring low-voltage protection with a 6 VDC maximum rating. The 1.1 A hold current suits moderate load applications, while the 40 A Imax handles significant fault currents. Choose this specific model for space-constrained designs needing a 1210 footprint. Consider the -40°C to +85°C operating range for standard commercial environments.

Part Context

This device belongs to the microSMD series of PolySwitch resettable fuses from Littelfuse. These components are engineered specifically for surface-mount technology integration. The series provides solid-state overcurrent protection solutions that replace traditional fusible links. They are widely utilized in modern electronics where board space is limited and resettable protection is preferred.