PRG21BC1R0MM1RK

Ptc Resettable Fuses Overview

The PRG21BC1R0MM1RK is a POSISTOR PTC thermistor from Murata Electronics, designed for surface-mount PCB applications. It features a nominal resistance of 1 Ohm with a tolerance of 20 percent and a rated current of 20 Amperes. The component operates within a temperature range of -20°C to +85°C and utilizes an SMD/SMT termination style. Packaged in reels, cut tapes, or MouseReel formats, it belongs to the PRG21-MM1RK series.

Ptc Resettable Fuses Feature Summary

• Provides overcurrent protection through positive temperature coefficient characteristics
• Supports high continuous current handling capabilities up to 20 Amperes
• Designed for direct surface-mount integration onto printed circuit boards

Ptc Resettable Fuses Applications

• Overcurrent protection in automotive transmission systems
• Circuit protection for electronic power steering units
• Protection circuits in XEV (Xtreme Electric Vehicle) drivetrains

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix MM1RK against official Murata documentation to confirm package and tape specifications. Ensure the selected variant matches the required 20 Ampere rating and 1 Ohm resistance for the target application. Cross-reference the datasheet for RoHS compliance and operating temperature limits before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when high current capacity is required alongside low resistance values for minimal voltage drop. The 1 Ohm resistance suits applications needing precise current limiting without significant power loss. Verify that the 20 Ampere rating aligns with the system's maximum operational current requirements and thermal environment constraints.

Ptc Resettable Fuses Part Context

This part belongs to the POSISTOR PRG series, specifically engineered for automotive-grade reliability. It utilizes ceramic materials to withstand harsh operating conditions typical in engine and drivetrain environments. The series offers robust performance for critical vehicle electronics requiring durable circuit protection solutions.

Ptc Resettable Fuses Replacement Considerations

Consult official Murata documentation for confirmed substitute part numbers. Do not assume functional equivalence based on generic family traits. Verify that any alternative maintains the same 20 Ampere rating, 1 Ohm resistance, and surface-mount compatibility.