B59872C0120A070

Ptc Resettable Fuses Overview

The B59872C0120A070 is a ceramic PTC thermistor from the TDK B598 series, designed for overcurrent protection in electronic circuits. It features a radial leaded disk package with a 5 mm lead spacing and dimensions of 9.00 mm diameter by 5.00 mm height. The component has a maximum operating voltage of 265 VAC and a hold current (Ih) of 80 mA at 25°C. Its trip current (It) is specified at 160 mA, with a maximum surge current rating of 1 A. The resistance at 25°C is typically 35 Ohms with a 25% tolerance. It operates within a temperature range of -40°C to +125°C and holds UL certification.

Ptc Resettable Fuses Feature Summary

• Provides automatic resettable overcurrent protection through positive temperature coefficient behavior
• Features a robust ceramic construction suitable for high-temperature environments up to 125°C
• Designed for through-hole mounting with radial leads for standard PCB integration

Ptc Resettable Fuses Applications

• Overcurrent protection for AC/DC power supplies
• Surge current limiting in consumer electronics
• Protection of motor drive circuits
• Input stage protection for industrial control systems

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix 'A070' corresponds to the required packaging configuration, as variations exist within the B598 family. Confirm that the 80 mA hold current aligns with the circuit's normal operating load to prevent nuisance tripping. Ensure the 265 VAC voltage rating exceeds the peak line voltage in the target application. Cross-reference the UL file number on official documentation to confirm compliance status for the final assembly.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable fuse is preferred over a one-time fuse for maintenance efficiency. The 80 mA hold current makes it suitable for low-power signal lines or small auxiliary circuits rather than main power rails. Consider the 35 Ohm initial resistance impact on circuit startup if sensitive voltage drops are a concern. The radial package requires sufficient board clearance compared to surface-mount alternatives.

Ptc Resettable Fuses Part Context

This part belongs to the TDK B598 series of leaded PTC thermistors, widely used for general-purpose circuit protection. The series offers various current ratings and voltage options to suit different application requirements. TDK Electronics manufactures these components using advanced ceramic materials to ensure consistent performance and reliability across automotive and industrial standards.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other B598 series parts with matching 80 mA hold current and 265 VAC rating, such as B59872C0120A051, provided the packaging and lead spacing are compatible.