FSMD012-1206-R

Ptc Resettable Fuses Overview

The FSMD012-1206-R is a surface-mount polymeric self-resetting fuse manufactured by Fuzetec. It features a 48V maximum voltage rating and a 120mA hold current, with a trip current of 390mA. The device operates within a temperature range of -40°C to +85°C and dissipates up to 600mW. Its initial resistance is 1.4Ω, rising to 6.5Ω after tripping. The component measures 3.5mm in length, 1.8mm in width, and 0.85mm in height, designed for high-density PCB applications.

Ptc Resettable Fuses Feature Summary

• Solid-state construction offering faster trigger times and lower resistance compared to standard SMD devices.
• RoHS compliant and halogen-free design suitable for environmentally regulated manufacturing processes.
• Compact 1206 footprint optimized for space-constrained surface mount layouts.

Ptc Resettable Fuses Applications

• Protection circuits for high-density printed circuit boards
• Overcurrent protection in portable electronic devices
• Circuit safeguarding in consumer hardware

Ptc Resettable Fuses Procurement Notes

Verify the specific manufacturer datasheet for the FSMD012-1206-R to confirm electrical characteristics and thermal derating curves. Ensure that the selected component matches the required hold and trip currents for the target application. Check for RoHS compliance documentation if environmental regulations apply. Confirm package dimensions align with the PCB footprint requirements before finalizing procurement.

Ptc Resettable Fuses Selection Notes

Select this component based on its 120mA hold current and 48V rating to match the circuit's normal operating parameters. Consider the low initial resistance of 1.4Ω for minimal voltage drop during operation. Evaluate the 600mW power dissipation capability against expected fault conditions. The 1206 size provides a balance between protection capacity and board space efficiency.

Ptc Resettable Fuses Part Context

This part belongs to the family of polymeric self-resetting fuses designed for surface mount technology. It serves as an alternative to traditional resettable fuses, providing automatic recovery after fault clearance. The 1206 form factor allows for automated assembly processes while maintaining robust overcurrent protection capabilities in compact electronic designs.

Ptc Resettable Fuses Replacement Considerations

Consult official substitution lists from Fuzetec for compatible alternatives. Verify that any replacement maintains identical voltage, current, and dimensional specifications. Cross-reference datasheets to ensure equivalent thermal and electrical performance characteristics are preserved in the substitute component.