YS4020

Overview

The YS4020 is a radially-wired high voltage PTC thermistor manufactured by Amphenol Advanced Sensors (Thermometrics). It features a ceramic construction with a nominal resistance of 1.1 kOhms at 25°C and a transition temperature range of 80°C to 100°C. The component supports a maximum operating voltage of 1.0 kV rms and is designed for through-hole mounting. It operates within an ambient temperature range of -20°C to 60°C.

Feature Summary

• High voltage capability up to 1.0 kV rms
• Positive temperature coefficient behavior for inrush current limiting
• Ceramic material construction for durability

Applications

• Inrush current limiting in power supply circuits
• High voltage electronic protection systems
• Industrial equipment circuit protection

Procurement Notes

Verify the specific transition temperature variant required, as the datasheet indicates a range of 80°C to 100°C. Confirm that the 1.1 kOhm resistance value aligns with the target circuit design parameters. Ensure the through-hole package style matches the PCB layout requirements for radial wiring.

Selection Notes

Select this component when high voltage isolation and inrush current control are necessary. The 1.1 kOhm resistance provides specific impedance characteristics suitable for certain power stages. Consider the 1.0 kV rating for applications requiring robust electrical isolation between high and low voltage sections.

Part Context

This part belongs to the YS series of PTC thermistors from Amphenol Advanced Sensors. It is categorized under ceramic type components designed for high voltage applications. The product line focuses on providing reliable protection against excessive current surges in demanding electronic environments.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.