MINIASMDC050F-2

Overview

The Littelfuse MINIASMDC050F-2 is a PolySwitch resettable PPTC device from the miniASMD series, designed for surface mount applications. It features a 24 VDC maximum voltage rating and a 500 mA hold current. The trip current is specified at 1 A with a typical trip time of 0.15 s. The component operates within a temperature range of -40°C to +85°C and has a power dissipation of 800 mW. It utilizes an 1812 (4532 metric) package with dimensions of 4.73 mm length, 3.41 mm width, and 0.62 mm height. The initial resistance ranges from 0.15 Ω to 1 Ω, and it carries AEC-Q200 qualification.

Feature Summary

• Provides overcurrent protection through automatic circuit interruption upon thermal activation.
• Offers repeated protection capability by resetting automatically after fault clearance and cooling.
• Complies with automotive reliability standards via AEC-Q200 qualification.

Applications

• Protection of circuits in automotive electronic modules requiring AEC-Q200 compliance.
• Overcurrent safeguarding for low-voltage DC power lines in vehicle systems.
• Circuit protection for portable electronics and handheld devices utilizing SMD packaging.

Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm exact electrical characteristics and packaging options. Ensure that the selected variant matches the required hold current and voltage ratings for the target application. Confirm moisture sensitivity levels and reflow soldering profiles prior to integration into the production line.

Selection Notes

Select this component when a compact surface mount solution is required for low-voltage DC circuits. The 1812 footprint offers a balance between current handling capacity and board space efficiency. Consider the 24 VDC limit and 500 mA hold current to ensure proper circuit coordination. Evaluate the thermal environment to guarantee operation within the specified -40°C to +85°C range without premature tripping.

Part Context

This part belongs to the miniASMD family of resettable fuses, which are engineered for high-reliability applications. The series provides a cost-effective alternative to traditional one-time fuses in modern electronics. It supports automated assembly processes due to its standard surface mount configuration and consistent performance characteristics across the product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult the manufacturer's selection guide or contact technical support directly to identify equivalent components with matching electrical parameters and mechanical footprints.

FAQ

What is the maximum operating voltage for the MINIASMDC050F-2?

The maximum working voltage is 24 VDC.

Does this component meet automotive industry standards?

Yes, the MINIASMDC050F-2 is qualified according to the AEC-Q200 standard.

What is the typical trip time for this fuse?

The typical trip time is 0.15 seconds when subjected to the trip current.