SFJEL1K00223MX0

Overview

The Knowles Syfer SFJEL1K00223MX0 is an axial lead EMI feedthrough filter capacitor designed for high-frequency noise suppression. It features a capacitance of 0.022 µF (22 nF) and a DC voltage rating of 1 kV. The component utilizes X7R dielectric material to maintain stability across varying temperatures. Its physical dimensions are specified as 9.80 mm in diameter by 9.40 mm in length, housed in an axial bushing package configuration suitable for panel mounting applications.

Feature Summary

• Provides effective electromagnetic interference attenuation through feedthrough architecture
• Engineered with X7R ceramic dielectric for reliable performance under thermal stress
• Supports direct panel or chassis mounting via axial bushing terminal configuration

Applications

• High-voltage power supply input filtering
• Electromagnetic compatibility (EMC) mitigation in sensitive electronic enclosures
• Signal line noise suppression in industrial control systems

Procurement Notes

Verify the current product status before integration, as official records indicate this specific part number may be classified as obsolete. Confirm availability through authorized distributors or secondary market suppliers. Ensure that any substitute components meet the original electrical specifications and mechanical footprint requirements to maintain system integrity and compliance.

Selection Notes

Select this component when axial feedthrough topology is required for superior high-frequency rejection compared to standard capacitors. The 1 kV rating allows use in medium-voltage circuits where standard low-voltage filters would fail. Consider the X7R temperature coefficient characteristics against application thermal profiles to ensure capacitance stability remains within acceptable limits during operation.

Part Context

This component belongs to the Knowles Syfer SFJE series of EMI feedthrough filters. These devices are specialized passive components designed to block unwanted radio frequency interference while passing desired signals or power. The series typically offers various capacitance values and voltage ratings tailored for rigorous industrial and aerospace environments requiring robust noise filtration.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the potentially obsolete status of this specific model, engineers must identify equivalent feedthrough filters with matching 1 kV ratings, 0.022 µF capacitance, and compatible axial bushing dimensions.