FSMD150-1206R

Ptc Resettable Fuses Overview

The FSMD150-1206R is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse manufactured by Fuzetec. Designed for high-density circuit protection, this component operates within a voltage range of up to 48V and supports a maximum current capacity of 100A. The device maintains a holding current of 150mA and trips at 390mA, ensuring reliable overcurrent interruption. It features a low initial resistance of 1.4Ω and dissipates 600mW of power. The unit measures 3.5mm in length, 1.8mm in width, and 0.85mm in height, fitting the standard 1206 footprint. Operating temperatures range from -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Solid-state construction providing faster trigger times and lower resistance compared to standard SMD devices.
• RoHS compliant and halogen-free composition suitable for environmentally regulated manufacturing processes.
• Compact surface-mount design optimized for space-constrained, high-density printed circuit boards.

Ptc Resettable Fuses Applications

• Protection circuits for high-density electronic board assemblies
• Overcurrent safeguarding in portable consumer electronics
• Interface protection for data and communication lines

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm exact electrical tolerances and packaging specifications. Ensure that the selected variant matches the required operating temperature range and current ratings for the target application. Cross-reference the part number with authorized distributors to confirm availability and compliance with current environmental standards such as RoHS directives before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component based on the required holding current of 150mA and the maximum system voltage of 48V. Consider the trip current threshold of 390mA to ensure proper coordination with upstream protective devices. Evaluate the thermal environment to confirm operation within the specified -40°C to +85°C range. The low profile and small footprint make it suitable for applications where board real estate is limited and rapid response to fault conditions is critical for system integrity.

Ptc Resettable Fuses Part Context

This part belongs to the FSMD series of self-resetting fuses from Fuzetec, designed specifically for surface-mount technology applications. The series offers a solid-state alternative to traditional fusible links, providing reusable overcurrent protection. The 1206 package size allows for automated placement in high-volume manufacturing environments while maintaining robust performance characteristics for protecting sensitive downstream components from damage due to excessive current flow.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes must match the 1206 footprint, 48V rating, and 150mA holding current. Verify that any replacement PPTC device meets or exceeds the 390mA trip current and 600mW power dissipation capabilities. Ensure the alternative component adheres to the same -40°C to +85°C operating temperature limits and maintains RoHS compliance for seamless integration into existing supply chains and assembly processes.