MINIASMDC260F/12-2

Overview

The Littelfuse MINIASMDC260F/12-2 is a polymer PTC self-resetting fuse designed for surface mount applications. It belongs to the PolySwitch miniASMD series and features a 1812 (4532 metric) concave package. The component has a maximum voltage rating of 12V and a hold current (Ih) of 2.6A. Key electrical parameters include a trip current (It) of 5A, a maximum interrupting rating of 100A, an initial resistance (Ri) minimum of 15 mOhms, and a post-trip resistance (R1) maximum of 50 mOhms. It operates within a temperature range of -40°C to 85°C and holds AEC-Q200 automotive qualification.

Feature Summary

• Polymer PTC technology provides automatic reset capability after fault clearance
• Automotive-grade reliability with AEC-Q200 certification
• Concave 1812 surface mount package facilitates automated assembly
• Low initial resistance minimizes power loss in normal operation

Applications

• Overcurrent protection in automotive electronic control units
• Protection for battery management systems in electric vehicles
• Circuit safeguarding in automotive infotainment and navigation modules
• Power line protection in automotive HVAC and climate control systems

Procurement Notes

Verify the specific suffix and voltage rating during procurement, as the model number indicates a 12V rating which differs from other variants in the same series such as the 16V or 32V versions. Confirm that the requested part matches the required AEC-Q200 automotive qualification status. Ensure compatibility with standard reflow soldering profiles and check moisture sensitivity level (MSL 2A) handling requirements prior to assembly to maintain device integrity.

Selection Notes

Select this component when designing circuits requiring automotive-grade overcurrent protection with a 2.6A hold current. The 1812 concave footprint is suitable for space-constrained PCB layouts. Engineers must account for the trip current threshold of 5A and ensure the circuit's normal operating current remains below the 2.6A hold limit. Consider the thermal environment, as performance varies with ambient temperature within the specified -40°C to 85°C range.

Part Context

This part is a member of the Littelfuse PolySwitch miniASMD series, which offers compact surface mount solutions for circuit protection. The miniASMD line is specifically engineered for high-volume manufacturing processes common in the automotive industry. It complements larger SMD fuses by providing a smaller form factor while maintaining robust fault protection capabilities for sensitive electronic components.

Replacement Considerations

MINIASMDC260F/16-2: Higher voltage rating (16V vs 12V), same current ratings and package.