MICROSMD075-2

$0.50

Description：PTC RESET FUSE 6V 750MA 1210
Series：PolySwitch®, microSMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:8a877ea1fb4e Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 6V 750MA 1210
Series：PolySwitch®, microSMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：6V
Current - Hold (Ih) (Max)：750 mA
Current - Trip (It)：1.5 A
Current - Max：40 A
Time to Trip：100 ms
Resistance - Initial (Ri) (Min)：110 mOhms
Resistance - Post Trip (R1) (Max)：400 mOhms
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)：0.024" (0.62mm)
Lead Spacing：-

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MICROSMD075-2

Overview

MICROSMD075-2 is a surface-mount PTC resettable fuse manufactured by Littelfuse, designed for circuit overload protection. The component features a 1210 (3225 metric) rectangular package with dual wraparound terminals. It operates within a temperature range of -40 °C to +85 °C and has a rated power dissipation of 0.6 W. Key electrical parameters include a maximum voltage of 6 VDC, a hold current of 750 mA, and an initial resistance of 0.29 Ω at 20 °C.

Feature Summary

Provides automatic circuit recovery after fault clearance without manual replacement
Utilizes polymer technology for compact surface-mount integration
Offers thermal response characteristics suitable for low-voltage DC applications

Applications

Overload protection in portable electronic devices
Circuit safeguarding for USB peripheral connections
Protection for battery-powered consumer electronics

Procurement Notes

Verify the manufacturer designation carefully, as TE Connectivity also lists this part number for similar PTC components. Confirm that the specific Littelfuse PolySwitch variant matches the required 6V rating and 1210 footprint. Ensure compliance with RoHS standards and check for any specific automotive or industrial qualification requirements if applicable to the target design.

Selection Notes

Select this component when space constraints require a small 1210 footprint for low-voltage circuits. It is appropriate for applications needing a 750 mA hold current with a 6 VDC maximum working voltage. Consider the 0.6 W power dissipation limit and the -40 °C to +85 °C operating range during thermal design analysis.

Part Context

This device belongs to the microSMD series of PolySwitch resettable fuses from Littelfuse. These components are engineered for high-density PCB layouts where traditional fuses are too large. The series provides reliable overcurrent protection for modern miniaturized electronics requiring fast response and repeated trip capabilities.