SFJEL2K00331MC0

Overview

The Knowles Syfer SFJEL2K00331MC0 is a Class 1 ceramic feedthrough capacitor designed for high-voltage EMI suppression. It features a capacitance of 330 pF with a ±20% tolerance and a DC voltage rating of 2 kVDC. The component utilizes C0G (NP0) dielectric material to ensure stable performance across a temperature range of -55°C to +125°C. It supports a maximum DC current of 15 A and provides an insertion loss of 13 dB at 100 MHz. The axial package measures 9.80 mm in diameter by 9.40 mm in length, utilizing a 1/4-28 thread specification for secure mounting.

Feature Summary

• Provides effective electromagnetic interference attenuation through integrated LC filtering architecture
• Maintains electrical stability under high thermal stress using C0G/NP0 dielectric composition
• Supports continuous high-current operation up to 15 A without degradation

Applications

• High-voltage power supply input filtering
• Medical equipment RF shielding
• Industrial control system noise suppression

Procurement Notes

Verify the specific manufacturing lot date code upon receipt, as this component has been marked as discontinued by the manufacturer. Confirm that the 1/4-28 threaded interface matches the panel cutout specifications exactly. Ensure storage conditions remain within standard limits to preserve the integrity of the internal ceramic structure before installation.

Selection Notes

Select this component when a compact axial feedthrough solution is required for 2 kV applications. The 330 pF value offers a balance between low impedance at high frequencies and minimal impact on DC blocking requirements. Consider the physical dimensions and threading constraints during PCB or chassis layout planning to ensure proper mechanical fit.

Part Context

This part belongs to the SFJE series of feedthrough capacitors from Knowles Syfer. These components are engineered for environments requiring robust EMI protection and high reliability. The series is characterized by its ability to handle significant current loads while maintaining strict signal integrity standards in sensitive electronic systems.

Replacement Considerations

Public documentation indicates this product is no longer manufactured. Verify availability of alternative stock or contact the manufacturer directly for potential obsolescence management options before finalizing design integration.