SFJEC1K00473MX1

Overview

The Knowles Syfer SFJEC1K00473MX1 is an axial feedthrough capacitor designed for high-frequency EMI suppression. It features a capacitance of 0.047 µF with a ±20% tolerance and a DC voltage rating of 1 kVDC. The component utilizes C0G (NP0) dielectric material, ensuring stable performance across a temperature range of -55°C to +125°C. Constructed with a flange end seal and solder terminations, it provides robust shielding against electromagnetic interference in demanding electronic environments.

Feature Summary

• Provides effective electromagnetic interference filtering through axial feedthrough architecture
• Maintains capacitance stability under varying thermal conditions using C0G dielectric
• Supports high-voltage applications with a 1 kVDC rated insulation capability

Applications

• High-voltage power supply input filtering
• RF signal line protection in communication equipment
• Industrial control system EMI suppression

Procurement Notes

Verify the specific axial lead configuration and flange seal type against mechanical constraints before integration. Confirm that the C0G dielectric characteristics align with circuit stability requirements. Ensure the 1 kVDC rating exceeds peak operational voltages including transients. Validate termination compatibility with intended soldering processes to maintain seal integrity during assembly.

Selection Notes

Select this component when axial mounting is preferred over surface mount for superior grounding paths. Consider the 0.047 µF value for bypassing mid-range noise frequencies. The C0G dielectric is suitable for precision circuits requiring minimal capacitance drift. Evaluate the physical dimensions to ensure adequate clearance for the flange structure within the enclosure design.

Part Context

This part belongs to the Syfer feedthrough capacitor family, which emphasizes compact EMI filtering solutions. Unlike standard MLCCs, feedthrough capacitors integrate the ground connection directly into the package body, reducing parasitic inductance. This design enhances high-frequency attenuation performance compared to conventional discrete components.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.