851-20/011

Overview

The Qualtek 851-20/011 is a single-phase EMC/EMI line filter designed for chassis mounting. It features a single-stage configuration with an inductance of 700µH and supports rated AC voltages of 115V and 250V at 50/60Hz. The unit handles a continuous current of 20A and utilizes 8-32 threaded posts for termination. Operating temperatures range from -25°C to 85°C, and it holds CSA, UR, and VDE certifications.

Feature Summary

• Single-stage design for common mode interference suppression
• Chassis mount installation with threaded post termination
• Certified for international safety standards including CSA, UR, and VDE

Applications

• General purpose electronic equipment power filtering
• Industrial control systems requiring EMI suppression
• Power supply input stages for noise reduction

Procurement Notes

Verify part availability as some distributors list this item as discontinued or out of stock. Confirm the specific suffix /011 matches your terminal requirements. Check for RoHS3 compliance status before integration. Ensure chassis mounting space accommodates the physical dimensions specified in the official datasheet.

Selection Notes

Select this component for applications requiring 20A capacity at standard mains frequencies. The single-stage architecture offers economical noise suppression for general-purpose use. Verify that the 8-32 threaded post interface aligns with existing panel hardware. Consider the operating temperature range when evaluating environmental constraints.

Part Context

This model belongs to the Qualtek 851 series of general-purpose filters. These units are engineered to suppress line-to-ground interference economically. The series provides standardized solutions for basic EMI/RFI mitigation in power line applications without complex multi-stage configurations.

Replacement Considerations

Some sources indicate this specific part number may be discontinued. Verify current production status with the manufacturer. If unavailable, consult the official datasheet for recommended alternative part numbers within the same series or equivalent specifications.