YQS8103

Overview

The YQS8103 is a radial disc PTC resettable fuse manufactured by Amphenol Advanced Sensors (Thermometrics). It features ceramic construction and is designed for through-hole mounting. The component operates within a temperature range of 0°C to 60°C. Electrical specifications include a maximum voltage rating of 30V and a hold current of 120mA. This device provides overcurrent protection by increasing resistance significantly upon fault conditions, resetting automatically once the fault is removed.

Feature Summary

• Ceramic PTC resettable fuse design
• Automatic reset functionality after fault removal
• Radial disc package for through-hole mounting

Applications

• Overcurrent protection in electronic circuits
• Battery pack protection systems
• Consumer electronics power supply lines

Procurement Notes

Verify the specific hold current and trip characteristics against the official datasheet before integration. Confirm that the 30V rating and 120mA hold current align with the target circuit requirements. Ensure the operating temperature range of 0°C to 60°C is sufficient for the intended environment. Check for any RoHS compliance documentation if required by project standards.

Selection Notes

Select this component when automatic reset capability is preferred over one-time fuses. The radial disc form factor suits applications requiring through-hole assembly. Consider the 120mA hold current limit to ensure normal operation does not trigger the device. Verify that the 30V maximum voltage rating exceeds the circuit's peak voltage. Evaluate thermal management needs given the 0°C to 60°C operating range.

Part Context

This part belongs to the Thermometrics line of protective devices from Amphenol Advanced Sensors. It serves as a reusable alternative to traditional fusible links. The radial disc package distinguishes it from surface-mount alternatives. It complements other passive components in power management designs requiring reliable overcurrent safeguarding.