4251-000

Overview

The Tusonix 4251-000 is a chassis-mount EMI/RFI LC (PI) filter designed for high-performance noise suppression. It features a capacitance of 3000 pF and supports a maximum DC current of 10 A with a voltage rating of 125 VDC. The component utilizes an axial bushing package with dimensions of 4.75 mm diameter by 9.12 mm length. This feedthrough capacitor integrates internal inductance and capacitance to provide effective attenuation across the frequency spectrum.

Feature Summary

• Integrates LC PI-filter topology within a single feedthrough housing
• Provides high-current handling capability for power line applications
• Features robust chassis mounting design for secure installation

Applications

• Chassis-mounted power input filtering
• EMI suppression in industrial control systems
• Noise reduction in sensitive electronic equipment power supplies

Procurement Notes

Verify the specific capacitance value and voltage rating against the official datasheet before integration, as suffixes may alter electrical characteristics. Confirm that the 125 VDC rating and 10 A current capacity meet the system requirements. Ensure the chassis mount style matches the mechanical enclosure design. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component when a combined LC PI-filter solution is required for chassis mounting. The 3000 pF capacitance offers specific attenuation characteristics suitable for certain frequency ranges. Compare the 125 VDC rating against peak operating voltages. Consider the physical dimensions of the 4.75 mm diameter bushing for panel cutout compatibility.

Part Context

This part belongs to the Tusonix 4251 series of multilayer bushing EMI filters. These components are engineered to replace traditional discrete LC networks, saving board space and simplifying assembly. The series includes various capacitance values and voltage ratings to accommodate different power line filtering needs.

Replacement Considerations

Direct substitutes include other 3000 pF, 125 VDC LC PI-feedthrough capacitors from Tusonix such as the 4251-000LF variant. Verify mechanical thread size and mounting style compatibility before substitution.