ASMDC185F/33-2

Ptc Resettable Fuses Overview

The Littelfuse ASMDC185F/33-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse designed for automotive applications. It belongs to the ASMD series and holds AEC-Q200 qualification. The device features a hold current of 1.85 A and a trip current of 3.7 A, with a maximum voltage rating of 33 VDC. It offers a maximum fault current capacity of 40 A and an initial resistance of 40 mOhms. The component operates within a temperature range of -40°C to +85°C and is housed in a compact 2-SMD package measuring 7.50 mm by 5.10 mm.

Ptc Resettable Fuses Feature Summary

• Provides overcurrent protection through automatic circuit restoration without manual replacement after fault conditions clear.
• Engineered specifically for extreme automotive environments with robust reliability standards.
• Utilizes surface-mount technology for efficient integration into modern printed circuit board assemblies.

Ptc Resettable Fuses Applications

• Automotive electronic control units
• In-vehicle power distribution networks
• Consumer electronics requiring AEC-Q200 compliance

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix /33-2 matches the required 33V rating and reel packaging configuration. Confirm AEC-Q200 certification status is explicitly documented in the official datasheet for the exact part number variant. Ensure compatibility with lead-free reflow soldering processes specified by the manufacturer.

Ptc Resettable Fuses Selection Notes

Select this component when a 1.85 A hold current and 33 VDC maximum voltage are required for automotive-grade circuit protection. Consider the 2-SMD footprint dimensions for space-constrained PCB layouts. Evaluate the 40 A maximum fault current capability against potential surge scenarios in the target application circuit design.

Ptc Resettable Fuses Part Context

This device is part of the ASMD family of self-recovery PPTC devices from Littelfuse. The series includes variants like ASMDC125F/33-2 and SMDC185F/33-2, offering different current ratings and form factors while maintaining automotive qualification standards for reliable operation in harsh electrical environments.

Ptc Resettable Fuses Replacement Considerations

SMDC185F/33-2 serves as a comparable alternative within the same manufacturer portfolio, sharing similar electrical characteristics but potentially differing in physical package dimensions or specific thermal performance metrics.