Ground EMI Filters

High-frequency signals (EMI) on ground is never good news - they interfere with normal operation of equipment and cause electrical overstress (EOS).  However it is easy to block propagation of electromagnetic interference on ground by installing highly-effective ground EMI filters in ground lines. Our unique patented ground EMI filters provide very low impedance for DC and mains' power while effectively blocking propagation of high-frequency currents throughout facility or equipment ground. Ground filters meet safety standards, as well as SEMI E176, ANSI/ESD S6.1 and ANSI/ESD S20.20.

OnFILTER offers ground EMI filters for the facility and for grounding inside the equipment, providing universal protection against propagation of EMI.  Select below the category of ground EMI filters of your interest for more details.

Grounding in the Facility

Installs in-line with facility grounding to blocks propagation of EMI from noisy equipment throughout the factory

Ground EMI filter GLE30-1

Installs in-line with ESD grounding inside equipment to block EMI propagation throughout the tool

Grounding with ESD Ground
Ground EMI Filter GLE04-01
Application Notes

Applications of ground EMI filter GLE04-01 in ESD ground inside equipment

Applications of ground EMI filter in facility ground

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Technical Articles

Presented at 2017 EOS/ESD Symposium. This paper shows how EMI-caused EOS in a wire bonder can be completely blocked using GLE04-01 ground EMI filter. Co-authored by IBM and OnFILTER

Paper by J. Salisbury (Finisar) and V. Kraz (OnFILTER), 2016 EOS/ESD Symposium

Published in TAP Times, May 2016

Presented at IPC APEX in 2015

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What is EMI?  A formal definition of Electromagnetic Interference is that it is a malfunction of equipment caused by excessive high-frequency signals, either radiated (via air), or conducted (via wires).  Often it is also called RFI - Radio Frequency Interference.  Most conventionally, EMI is understood as undesirable high-frequency signals, and EMI filters as devices that suppress such signals while preserving the "good" ones.         

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U.S. Patents 10,263,591; 9,076,806 All specifications are subject to change without notice.

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