CSI EMI Filters & RFI Filters

Our strength…The knowledge, experience and expertise to meet your exacting requirements.

Custom Suppression, Inc. (CSI) is a subsidiary of Electro Technik Industries, Inc. , a world leader in EMI and RFI filters for over 25 years. CSI custom filters for military and commercial use are unsurpassed in quality.

The CSI Promise to You

We design and build EMI and RFI filters to meet or exceed your needs and expectations, from electrical performance to dimensional requirements. All of the products we produce are of the highest quality and reliability. We strive to add value to you, our customer, with intelligent solutions, competitive pricing and on-time delivery.

(520) 573-0221

EMI Filter and RFI Filter applications include:

• Data lines
• Secondary power supply lines for digital audio/video and communications equipment
• Computer motherboards
• USB hubs
• Hard disk drives
• CD and DVD ROMs
• AC adapters
• and electronic musical instruments 

Rest assured that CSI has the ability to develop innovative solutions that focus on quality and customer satisfaction.

Our products are available in a wide variety of sizes with varying electrical characteristics, guaranteed to fit your specific application.

EMI Filters

EMI filters, or electromagnetic interference filters, are electronic passive devices used to suppress undesirable electromagnetic emission or any electronic disturbance which causes a malfunction or degradation in the performance of electrical equipment. An EMI Filter will suppress disruptions, enabling your device to function properly.

RFI Filters

RFI filters, or radio frequency interference filters, electronic passive devices, are used to suppress undesirable electrical energy, conducted or radiated, within the frequency range dedicated to radio frequency transmission. As with an EMI Filter, an RFI Filter will suppress disruptions, allowing your equipment to function unhindered.

Correct EMI Filter or RFI Filter Selection

CSI is here to solve your sourcing problem. Think of our team…as an extension of your team.

Our CSI team will assist you every step of the way, if you wish, including electrical characteristics and physical size and shape.

(727) 536-7861

Our team provides design and problem-solving services to assist you in defining your needs and filter selection.

Cost-saving standard components and catalog filters will be utilized whenever possible.

Modified and custom filters are supplied when required. 

CSI brings you a unique combination of technologies to solve electromagnetic and radio interference issues:

• RFI Filters
• Custom RFI filters
• RFI Power filters
• EMI Filters
• Custom EMI filters
• EMI Power filters

In addition, your application may require a filter that allows a line cord to be plugged in directly, interconnect by screw terminals, solder-in or the need for various connectors. These needs will be addressed and solutions are available through CSI.

Additional CSI Products

Custom Suppression has an extensive line of products.

CSI manufactures a wide variety of filters, capacitors and connectors, including:

• Solder-in filters (eyelet filters)
• Resin Sealed filters and capacitors
• D-Sub Filters
• Hermetically Sealed filters and capacitors
• Feed-thru filters (bolt-style filters)

Call now, and discover what so many other companies have…working with a dedicated team of seasoned professionals makes your job a lot less stressful.

(727) 536-7861