MICROSMD035-2

Overview

The Littelfuse MICROSMD035-2 is a microSMD series resettable polyfuse designed for surface mount applications. It features a hold current of 0.35 A and a trip current of 750 mA with a maximum voltage rating of 6 VDC. The device has a typical trip time of 0.2 seconds and operates within a temperature range up to 85°C. Its physical dimensions are 3.43 mm in length and 0.62 mm in height, utilizing matte tin terminals. The component offers a resistance range between 0.32 Ω and 1.3 Ω, with a power dissipation capability of 0.8 W.

Feature Summary

• Provides reliable overcurrent protection through automatic resistance increase upon heating
• Enables circuit recovery without manual replacement after fault conditions clear
• Supports automated assembly processes via compact surface mount packaging

Applications

• Protection of portable electronic devices from short circuits
• Overcurrent safeguarding in battery-powered consumer electronics
• Circuit protection for LED lighting arrays
• Surge suppression in handheld communication equipment

Procurement Notes

Verify the specific suffix designation against official Littelfuse documentation to confirm electrical ratings and package variations. Ensure that the selected variant matches the required voltage and current specifications for the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity. Request updated datasheets to validate compliance with current RoHS and UL standards before finalizing procurement orders.

Selection Notes

Select this component based on the specific hold and trip current requirements of the protected circuit. Evaluate the maximum operating voltage to ensure it exceeds the system's peak potential. Consider the thermal environment and mounting orientation to maintain effective heat dissipation. Verify that the surface mount footprint aligns with the printed circuit board design constraints and manufacturing capabilities.

Part Context

This component belongs to the microSMD family of PolySwitch resettable fuses manufactured by Littelfuse. These devices utilize polymer positive temperature coefficient technology to provide reusable overcurrent protection. The series is engineered for high-volume surface mount production, offering a compact alternative to traditional axial leaded fuses in modern electronic assemblies.

Replacement Considerations

NANOASMDC035F-2