4201-051LF

Overview

The 4201-051LF is a third-order low-pass LC (Pi) EMI filter manufactured by Tusonix, a subsidiary of CTS Electronic Components. It features a capacitance value of 5500 pF and supports a maximum DC current of 10 A with a voltage rating of 200 V. The component utilizes an axial bushing package with one turret lead for chassis mounting. Its physical dimensions are 0.250 inches in diameter by 0.468 inches in length (6.35 mm x 11.89 mm). It provides an attenuation of 65 dB at 100 MHz and operates within a temperature range of -55°C to 125°C.

Feature Summary

• Third-order low-pass LC Pi filter topology for enhanced noise suppression
• Chassis mount design with axial bushing and single turret lead configuration
• High current handling capability up to 10 A DC
• Broad operational temperature range suitable for harsh environments

Applications

• Mobile device data line filtering
• Chassis-mounted EMI/RFI suppression systems
• Industrial control signal conditioning

Procurement Notes

Verify the specific suffix LF indicates RoHS compliance status against the latest manufacturer datasheet before procurement. Confirm that the 200 V rating and 10 A current limits align with your system's electrical requirements. Ensure the chassis mounting hole size matches the 0.250-inch diameter specification. Check for any updated environmental declarations or REACH status changes from the supplier.

Selection Notes

Select this component when high attenuation at 100 MHz is required for single-channel applications. The 5500 pF capacitance offers significant filtering for lower frequency noise compared to smaller values. Consider the axial bushing form factor if space constraints favor a compact cylindrical footprint over rectangular feedthrough capacitors. Evaluate the 200 V rating against peak transient voltages in the circuit.

Part Context

This part belongs to the 4200 series of EMI filters from Tusonix. It shares the same mechanical housing style as other models in the series but differs in internal LC network values. The 4201-051LF is distinct from the 4702 series feedthrough capacitors due to its multi-stage Pi filter architecture rather than a single capacitor element.

Replacement Considerations

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