4209-053LF

Overview

The 4209-053LF is a Pi-filter EMI feedthrough capacitor manufactured by Tusonix, a subsidiary of CTS Electronic Components. It features a capacitance of 5500 pF and a rated voltage of 350 V. The component supports a maximum DC current of 10 A and provides an insertion loss of 65 dB at a test frequency of 100 MHz. Designed for robust performance, it operates within a temperature range of 0°C to +125°C. The physical dimensions include a diameter of 4.75 mm and a length of 23.39 mm, with a unit weight of 1.860 g.

Feature Summary

• Utilizes a Pi-filter circuit topology for effective electromagnetic interference suppression
• Features metric bushing filter construction with axial leads and turret connections
• Provides high insertion loss performance for RFI/EMI applications

Applications

• Electromagnetic interference (EMI) filtering in electronic systems
• RFI suppression for power line conditioning
• Chassis-mounted signal and power filtering

Procurement Notes

Verify the specific suffix requirements when ordering, as the base model 4209-053 may differ from the lead-free variant 4209-053LF. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as some sources indicate non-compliance for the standard version. Ensure the selected packaging matches project needs, typically bulk for this series. Cross-reference part numbers carefully to avoid confusion with similar Tusonix feedthrough filters.

Selection Notes

Select this component when a Pi-filter configuration is required for superior attenuation compared to single-capacitor designs. The 350 V rating and 10 A current capacity suit moderate power applications. Consider the 4.75 mm diameter and 23.39 mm length for chassis mounting constraints. Verify that the 0°C to +125°C operating range meets environmental requirements. Compare against other Tusonix series like 4201 or 4203 if different capacitance or voltage ratings are needed.

Part Context

This component belongs to the Tusonix EMI Feedthrough Filter family, specifically the metric bushing type. Tusonix, now part of CTS Corporation, specializes in high-reliability capacitors for industrial and military applications. The 4209 series is characterized by its LC(PI) filter structure, offering enhanced noise reduction capabilities over standard feedthrough capacitors. These components are widely used in aerospace, defense, and industrial control systems where strict EMI standards apply.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Tusonix technical support for direct equivalents or cross-reference based on specific electrical parameters such as capacitance, voltage, and current ratings.