Versatile Hermetic Epoxy Seals Protect Fiber Optic Cable and Ensure Signal Quality

The world’s demand for communications bandwidth continues to increase, driven by the rapid growth of cloud computing, the Internet of Things, wireless communication and other “big data” technologies. In these widely varying applications, traditional copper cables and connectors are no longer feasible. Today they frequently share a dependence on a robust fiber optic infrastructure to carry large volumes of data at ultra-fast transmission speeds.

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Hermetic feedthroughs block moisture in tomorrow's automotive electronics

Electronics failures can bring critical automotive functions to a sudden halt. Experts specializing in electronics failure analysis can list a host of reasons for various malfunctions, but one of the most common causes is simple moisture. Because water and electronics do not mix well, several strategies exist to protect components from moisture and condensation. One of the most successful methods of protecting key components from water hazards involves hermetically sealed electronics cavities — enabled by moisture-blocking component assemblies such as hermetic feedthrough technology.

Sealed Sensor Assembly Gets A Reliability Boost

Learn how Lumasense and Douglas Electrical re-engineered a humidity sensor assembly to eliminate failures under pressure.

What’s the best way to incorporate sensors and sensing electronics into a pressure or vacuum chamber? Traditionally, the answer would have involved a hermetically sealed wire feedthrough. And in applications with complex or numerous electrical connections, well-designed hermetic feedthroughs are still the way to go.


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Battery Sealing Strategies

Hermetic epoxy seals protect lithium ion batteries

Whether they take to the streets in electric vehicles or stand still in energy storage systems, lithium-based battery modules pose a tough challenge from a wire sealing standpoint. Modern battery modules have a variety of power and signal conductors running between their individual electrochemical cells and through the battery pack’s exterior casing.

 Increasingly, battery makers are looking to epoxy-based feedthroughs as an alternative to glass-to-metal seals. Epoxies have a unique balance of mechanical, electrical, thermal and chemical-resistance properties that make them a good fit for battery sealing applications.

Check out our latest paper to learn how to incorporate hermetic power and signal feedthroughs into modern battery modules.

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Wire Bushings For Hazardous Locations

In the past, it was difficult to find feedthroughs and wire or line bushings that you could customize to your needs while meeting UL and other compliance standards for hazardous locations. Now, however, there’s an approach to feedthrough and wire bushing design that makes it far easier to meet all the relevant regulations without sacrificing design freedom. The key to this approach involves the use of epoxies to create hermetic seals around the wires.

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New Cryogenic Feedthrough Improves Ease-Of-Use

Epoxy-based hermetic feedthroughs have worked well in cryogenic systems for years. But the design modifications needed to operate in these extremely cold temperatures increased the size of the feedthrough and limited your mounting options. We recently eliminated these issues with an entirely new approach to cryogenic feedthrough design.

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Hermetic Feedthroughs Safeguard Mission-Critical Electronics

From automotive electronic control units to weather satellites and defense systems, electronics failures can bring communications and critical functions to a sudden halt. Experts specializing in electronics failure analysis can list a host of reasons for various malfunctions, but one of the most common causes is simple moisture.

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When Wire Feedthroughs Make Sense

Engineers who work with pressure and vacuum chambers usually reach for off-the-shelf sealed bulkhead connectors when they need to pass power and signal wires through the chamber wall. And while these connectors may seem like the best or only way to breach the chamber walls, they can actually drive cost, impose unnecessary mechanical design constraints and trigger electrical problems. So what’s the alternative? Wire feedthroughs hermetically sealed with epoxy.

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Critical Selection of Natural Gas Wellhead Feedthroughs

The importance of natural gas as an energy source for the United States has grown steadily since the mid-1990s. With continued political instability plaguing many of the world’s major energy producers, North American natural gas reserves provide an attractive option for energy independence. Natural gas is an attractive fuel because it is clean-burning and efficient, and according to the Energy Information Association, natural gas demand is expected to rise by more than 20 percent by 2030.

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The Six Challenges Of Specifying And Procuring Hermetic Feedthroughs For Space Simulation

The purpose of this white paper is to share the details and knowledge that engineers at Douglas Electrical have gained over the years regarding the specification and sourcing of hermetic seals and feedthroughs used in space simulation vacuum chamber applications. Having worked with most major space simulation facilities over the years, it is our hope that by sharing these observations, vacuum chamber test engineers both experienced and inexperienced will have an easier time solving the typical problems that can occur in feedthrough applications.

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Lean Initiative Enables U.S. Manufacturer to Stay Competitive, and Stay Onshore

“When we really sat down and looked at the challenges we faced, we realized a Lean initiative could provide the solution. But we’re a job shop, manufacturing a wide variety of custom-engineered products in runs sizes ranging from a few samples to a few hundred thousand. At Douglas, we do something different every day. We knew Lean worked in large corporations like the automotive industry, but we initially were not sure what the net would be for our type of business,” said Douglas.

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Meeting Feedthrough Challenges on the A-3 Test Stand

The purpose of this paper is to share the experience and knowledge that engineers at NASA and Douglas Electrical have gained regarding the specification of hermetic seals and feedthroughs used in engine test stand vacuum chamber applications. This paper looks specifically at the experience and solutions used in the new A-3 test stand that is being constructed at the NASA Stennis Space Center.

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Douglas Electrical
Address:    5 Middlebury Blvd.
Randolph, NJ 07869
Tel:    973.627.8230
Fax:   866.206.6916
General inquiries:
T 973.627-8230
Technical information:
T 973.627-8230

Engineered Hermetic Seals and Connectors for Wire and Cable

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