3-143-900

Overview

The Schurter 3-143-900 is a compensated high current common mode choke designed for two-phase applications. It features a nominal inductance of 14 mH and supports a maximum current rating of 64 A. The component utilizes through-hole (THT) terminals for mounting and is rated for a voltage of 800 VDC. This suppression choke is engineered to handle high current loads while providing effective electromagnetic interference filtering in demanding power environments.

Feature Summary

• Compensated design ensures stable inductance performance under high current conditions
• Optimized for two-phase power line noise suppression
• Robust construction suitable for high-current industrial applications

Applications

• Two-phase power supply input filtering
• Industrial equipment EMI suppression
• High-current DC circuit protection

Procurement Notes

Verify the specific inductance tolerance and saturation current characteristics against your system requirements before integration. Confirm that the through-hole footprint matches your PCB layout constraints. Ensure the 800 VDC rating exceeds the maximum operating voltage of your application to maintain safety margins and compliance with electrical standards.

Selection Notes

Select this component when high current handling capacity above 60 A is required alongside significant common mode noise reduction. The compensated nature makes it suitable for applications where inductance stability is critical despite varying load currents. Consider thermal management strategies given the high current rating and potential power dissipation during operation.

Part Context

This component belongs to Schurter's DKUH series of compensated chokes, which are specialized for high-current suppression tasks. Unlike standard chokes, these are designed to minimize inductance drop-off at high currents, making them ideal for robust power electronics where consistent filtering performance is essential across the entire operating range.

Replacement Considerations

When sourcing substitutes, prioritize components with similar compensation characteristics and comparable current ratings. Verify that alternative parts meet the same inductance values and voltage ratings to ensure functional equivalence in high-current two-phase applications.