Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI) are persistent challenges in modern electronic systems. These unpredictable phenomena can reveal themselves in any new design and threaten to derail product development timelines.

Commonly, the first instinct of engineers is to go back to the drawing board. Teams modify the design, finding room on the board to incorporate a filter component. While off-the-shelf filters provide general EMI/RFI suppression, they often fall short when dealing with unique, high-performance applications or new products with particularly troublesome interference frequencies.

Fortunately, there is a less costly, quicker, and ultimately more effective solution to attack problematic interference frequencies. Quell’s custom EESeal® EMI filter inserts offer a simple way to gain product compliance without having to redesign the board.

Compared to off-the-shelf parts, EESeal custom inserts deliver more targeted performance. With rapid turnaround and seamless integration without tools, they are often the faster solution to an EMI testing failure.

Where Off-the-Shelf Solutions Often Fall Short

Off-the-shelf EMI/RFI filters are designed for broad, generic use cases. However, in real-world applications, these solutions frequently fail to meet specific demands. And it may be difficult to locate, test, and source this hardware in the late stages of a product timeline. Common scenarios can make finding the right part even more difficult:

  • Unique Designs: Irregular shapes or high-density layouts often don’t align with standard filters and would require more engineering re-work.
  • Stringent Requirements: Military, aerospace, and medical industries demand extreme reliability under harsh conditions, where temperature fluctuations, vibration, and electromagnetic environments typically exceed standard design thresholds.
  • Space Constraints: Compact designs often lack the extra physical space to accommodate bulky traditional filters.
  • Industry-Specific Needs: Compliance with rigorous industry standards like MIL-STD-461, DO-160, or IEC 60601 requires precise EMI/RFI mitigation tailored to the device’s operational environment.
  • Expensive Modifications: If a product fails EMI compliance testing, retrofitting standard filters can require costly redesigns of both electronic circuitry and mechanical housings.
  • Longer Lead Times: Sourcing custom off-the-shelf components often involves extended lead times, delaying project timelines and increasing costs.

The Case for Custom EMI/RFI Suppression

Custom EMI/RFI solutions, like EESeal filter inserts, address the limitations of generic filters. Rather than redesign, filter inserts fit around the pins of standard connectors you’re already using. Miniaturized circuits embedded in the silicone disc can target a specific range of frequencies.

Benefits of EESeal filter inserts include:

  • Precision: Designed specifically for the electrical and mechanical characteristics of your system design, ensuring optimal performance.
  • Reliability: Long-term performance in demanding environments, from high-altitude aerospace systems to rugged military vehicles.
  • Efficiency: Optimized for Size, Weight, and Power (SWaP), critical in applications where every millimeter and milligram matters.
  • Compliance: The proven solution helps new products to meet or exceed regulatory standards, even for military and aerospace projects.

EESeal: Immediate EMI Mitigation Without Redesign

Quell’s EESeal® EMI filter inserts provide a last-minute intervention that precision-targets interference frequencies. This innovative approach has several advantages over adding off-the-shelf filters.

  • Pin-by-Pin Customization: This level of detail is crucial for mitigating noise at its source, accounting for data integrity and voltage variations across each connector pin. Unlike traditional filters that may compromise data lines, EESeal maintains signal integrity while ensuring robust EMI suppression.
  • Rapid Prototyping: Need it fast? Samples can be delivered within 24-48 hours, making quick design iterations possible while still at the testing center.
  • Seamless Integration: EESeal inserts are flexible and fit directly into existing connectors without the need for redesigns or modifications.
  • Durability: Engineered to perform reliably in extreme environments, including high-vibration, high-temperature, and moisture-prone conditions. The EESeal stands up to 500 mating cycles per EC 38999 connector specifications.

Building a Custom EMI/RFI Connector Insert

Creating a custom EMI/RFI suppression insert with Quell is a straightforward process:

  • Initial Assessment: Identify interference sources, operational environments, and performance goals. Quell’s team works closely with your engineers to understand the specific EMI/RFI challenges.
  • Design Phase: Quell collaborates with you to develop a tailored solution that fits seamlessly into your connector architecture.
  • Prototyping: Receive rapid prototypes, often within 24 hours, to validate performance in real-world conditions.
  • Implementation: Once the solution meets your requirements, Quell finalizes the design for production, ensuring consistency and reliability.

Throughout this process, Quell emphasizes a customer-first approach, leveraging deep engineering expertise to deliver solutions that align with your technical and commercial objectives.

Applications of EESeal Customization

EESeal inserts have proven effective across a wide range of industries:

  • Military & Defense: EMI suppression in ruggedized communication systems, radar, and avionics. EESeal filter inserts have been deployed in missiles, helicopters, and military vehicles.
  • Aerospace: Lightweight, space-saving designs for satellites, aircraft systems, and navigation equipment. Additionally, filter inserts are employed to make supporting electronic systems viable, like cockpit displays, fuel systems, and in-flight entertainment.
  • High-Value Medical Devices: Ensuring compliance with strict EMI standards for life-saving equipment, such as robotic surgery, MRI and CT imaging, or blood analytic tools.
  • Industrial Automation: Protecting control systems from EMI in noisy factory environments with high-power machinery.
  • Telecommunications: Enhancing signal integrity in high-speed data transmission networks.

Partner for Success

When EMI/RFI challenges threaten to delay your product timeline, Quell can offer a proven path to fast, effective, and reliable mitigation:

  • Expertise: Decades of experience in EMI/RFI suppression across critical industries.
  • Agility: Rapid prototyping and short lead times ensure you meet tight development schedules.
  • Customization: Solutions tailored to your exact requirements without the cost and complexity of traditional custom filters.

Ready to experience the difference? Contact Quell to discuss your specifications or request a sample EESeal today and see how custom EMI/RFI suppression can help your designs.