YQD100N0600

Overview

The YQD100N0600 is a ceramic PTC resettable fuse manufactured by Amphenol Advanced Sensors under the Thermometrics brand. It features a radial leaded disc package designed for through-hole mounting. The component has a rated voltage of 230 V RMS and a maximum operating voltage of 265 V. Its hold current rating is 20 mA, with a trip current of 40 mA. The resistance at 25°C is 600 ohms with a tolerance of ±25%. It operates within a temperature range up to +60°C and meets UL and CSA safety standards.

Feature Summary

• Provides overcurrent protection through automatic reset functionality after fault clearance
• Utilizes ceramic PTC technology for stable thermal response and high reliability
• Designed for through-hole PCB mounting with radial leads for secure mechanical attachment

Applications

• Overcurrent protection in consumer electronics power supplies
• Circuit protection for battery packs and portable devices
• Line voltage protection in AC-powered appliances

Procurement Notes

Verify that the required hold current of 20 mA aligns with the circuit's normal operating current to prevent nuisance tripping. Confirm the maximum operating voltage of 265 V exceeds the peak line voltage in the application. Ensure the PCB layout accommodates the radial disc form factor and provides adequate spacing for thermal dissipation during trip events. Check compliance requirements against UL and CSA certifications listed for this specific part number.

Selection Notes

Select this component when a resettable fuse is preferred over a one-time fuse for maintenance efficiency. The 600-ohm initial resistance is suitable for low-current signal or power lines where minimal voltage drop is critical. Consider the +60°C maximum operating temperature limit; if ambient temperatures exceed this, derating or alternative packaging may be necessary. The radial lead configuration simplifies automated assembly compared to surface-mount alternatives.

Part Context

This part belongs to the Thermometrics PTC resettable fuse family, which specializes in polymer positive temperature coefficient devices for electronic circuit protection. The series offers various current ratings and voltage profiles tailored for different industrial and consumer applications. Amphenol Advanced Sensors integrates these components into broader sensor and protection solutions, emphasizing reliability in harsh environments.

Replacement Considerations

Cross-reference with other Thermometrics radial PTC fuses having identical 20 mA hold current and 265 V max voltage ratings. Verify that substitute parts maintain the same 600-ohm resistance tolerance and UL/CSA approvals to ensure regulatory compliance and functional equivalence.