47721-490

Overview

The Vicor Corporation part number 47721-490 is a common mode choke designed for signal and power line filtering applications. This component features an inductance of 49 µH measured at a frequency of 10 kHz, providing effective noise suppression in the lower frequency range. The impedance is specified as 140 Ohms at 1 MHz, ensuring attenuation of high-frequency electromagnetic interference. It supports a maximum current rating of 22 A with a maximum DC resistance (DCR) of 3.5 mOhm, minimizing insertion loss in high-current paths. The device is configured as a two-line choke and utilizes a chassis mount style for secure installation within equipment enclosures.

Feature Summary

• Provides common mode noise rejection for dual-line circuits through magnetic coupling
• Supports high continuous current loads up to 22 Amperes with low resistive loss
• Engineered for chassis mounting to ensure mechanical stability in industrial environments

Applications

• Electromagnetic interference filtering in data communication interfaces
• Noise suppression in industrial control system power inputs
• Signal integrity enhancement in automotive electronic modules

Procurement Notes

Verify the exact physical dimensions and mounting hole patterns against your chassis design before ordering, as chassis mount components require precise mechanical fitment. Confirm that the 22A current rating aligns with your system's peak load requirements to prevent saturation or excessive heating. Ensure the 140 Ohm impedance at 1 MHz meets your specific EMI/EMC compliance targets for the intended application environment.

Selection Notes

Select this component when a robust, high-current common mode choke is required for chassis-mounted installations. The 49 µH inductance value is suitable for general-purpose filtering where moderate inductance is needed without significant size penalties. Consider the low DCR of 3.5 mOhm if voltage drop across the filter is a critical constraint in your power distribution network.

Part Context

This component belongs to Vicor Corporation's passive magnetic interconnect portfolio, specifically categorized under common mode chokes and filters. While Vicor is widely recognized for active DC-DC conversion modules, this part represents their passive filtering solutions used to complement power delivery networks. It serves as a fundamental building block for ensuring signal purity and regulatory compliance in noisy electrical environments.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Engineers should verify pin compatibility and magnetic characteristics when considering alternative vendors.