851-03/003

Overview

The Qualtek 851-03/003 is a single-phase EMC/EMI line filter module designed for general-purpose applications. It features a current rating of 3 A and operates at frequencies of 50 Hz and 60 Hz. The voltage rating spans from 115 VAC to 250 VAC. This component utilizes quick connect termination methods and is constructed to suppress line-to-ground common mode interference. It complies with UR, CSA, and VDE safety standards.

Feature Summary

• Suppresses line-to-ground common mode interference
• Complies with international safety standards including UR, CSA, and VDE
• Designed as an economical single-stage solution

Applications

• Single-phase power line filtering
• EMC/EMI suppression in electronic equipment
• General-purpose industrial applications requiring common mode noise reduction

Procurement Notes

Verify the specific datasheet version against the manufacturer's official documentation to ensure compliance with current safety certifications such as UR, CSA, and VDE. Confirm that the quick connect termination style matches the intended PCB or chassis mounting requirements. Ensure the operating voltage range of 115 VAC to 250 VAC aligns with the system design specifications before procurement.

Selection Notes

Select this component when a cost-effective single-stage filter is required for common mode noise suppression in single-phase AC circuits. It is suitable for applications where space constraints allow for SMD/SMT mounting styles and where quick connect terminations are preferred over screw terminals. Ensure the 3 A current rating meets the load requirements without exceeding thermal limits.

Part Context

This part belongs to the Qualtek 851 Series, which consists of general-purpose single-stage filters. These components are engineered to provide economic suppression of electromagnetic interference while meeting rigorous international safety standards. The series is designed for broad compatibility across various electronic devices requiring reliable EMI mitigation.

Replacement Considerations

Consult official Qualtek documentation for direct substitutes within the 851 series or equivalent single-phase EMI filters with matching 3 A ratings and 115-250 VAC voltage ranges. Verify that any replacement maintains the same termination style and safety certifications.