4251-001

Overview

The Tusonix 4251-001 is a multilayer bushing EMI feedthrough filter designed for high-current applications. It features an LC filter circuit topology with a capacitance of 15 nF and a voltage rating of 50 VDC. The component supports a maximum DC current of 10 A and exhibits a maximum DC resistance of 10 GOhms. It provides an insertion loss of 70 dB at a test frequency of 1 GHz. The unit operates within a temperature range of 0°C to +125°C. Physical dimensions include a diameter of 4.75 mm and a height of 9.12 mm, with leads measuring 0.81 mm in diameter.

Feature Summary

• Provides effective electromagnetic interference suppression through integrated LC filtering architecture
• Supports high direct current loads up to 10 Amperes without performance degradation
• Features robust thermal stability suitable for elevated operating environments

Applications

• Power supply input filtering for electronic equipment
• Signal line protection in communication systems
• Chassis-mounted EMI mitigation for industrial control units

Procurement Notes

Verify the specific manufacturer part number against official Tusonix or CTS documentation before ordering. Confirm that the required capacitance, current rating, and physical mounting specifications align with your design constraints. Check for RoHS compliance status as indicated in the latest datasheet, as environmental regulations may vary by region and production batch. Ensure lead dimensions match your PCB or panel hole requirements.

Selection Notes

Select this component when high current handling capability is required alongside significant attenuation of radio frequency noise. The 15 nF capacitance offers a balance between low-frequency filtering and physical size. Consider the 50 VDC rating to ensure adequate margin for your system's operating voltage. The threaded bushing style requires appropriate panel cutouts and mounting hardware for secure installation.

Part Context

This component belongs to the Tusonix 4251 series of multilayer bushing filters. These devices are engineered for chassis mounting and provide a compact solution for EMI suppression in space-constrained applications. The series utilizes ceramic dielectric materials to achieve stable electrical characteristics across the specified temperature range.

Replacement Considerations

Consult official Tusonix substitution guides for verified equivalents. Generic cross-references may not match the precise insertion loss or current handling capabilities. Verify mechanical compatibility, including thread size and overall dimensions, before substituting.