Custom Hermetic Feedthroughs

What Are Electrical Feedthroughs For?

You might not think that there are many components that can be found in X-ray machines, transformers and furnaces. But electrical feedthroughs are commonly used in a wide variety of technologies to help make sure that electricity doesn’t escape and cause malfunctions. It is important to know what these feedthroughs are used for and to appreciate this important piece of technology that keeps so many different technologies running.

The Importance of Vacuums 

Creating a vacuum guarantees that the electricity being transported from one part of a machine to another does not get out. Vacuum feedthroughs effectively make sure that the electricity is distributed safely.

Using Seals

The key to creating a vacuum is the type of seal that is used. Hermetic feedthroughs use glass-to-metal seals and ceramic seals to create this vacuum. When building a new seal, it is extremely important that the materials used are able to withstand intensive use and not break down over time.

This is why many seals are made with glass and ceramics; these materials are designed to withstand extreme temperatures, as well as other wear and tear. Many of these seals are used in technology like furnaces that operate at extreme temperatures. Making sure the seals do not break down easily will make sure the machine runs smoothly.

What Kind of Hermetic Feedthrough Should You Choose?

You rely on a steady connection of power to get jobs done in the most hostile climates, and you need a hermetic feedthrough that you can rely upon. There are several kinds of feedthroughs available, so look carefully before selecting.

Glass to Metal

A glass to metal hermetic feedthrough is made of glass which is heated up and used in its molten state. This is a durable feedthrough that can operate under all conditions and transfer electricity at high voltages.

Ceramic to Metal

Ceramic to metal hermetic feedthroughs require a substantial amount of craftsmanship and time to make. They can be custom-made for specific uses and are ideal for jobs that require a certain kind of feedthrough.

Look for Quality

Whatever kind of hermetic feedthrough you use, make sure you are purchasing one that is made of high-quality materials with construction that prevents all kinds of leaks. Heavy duty feedthroughs are often used in the military and for medical uses and provide a reliable seal and connection time after time. Check your hermetic feedthrough periodically for signs of wear and tear and be sure to replace as needed. The highest-quality feedthrough are virtually leak resistance and will never fail to deliver.

When to Use Ceramic Feedthroughs

Engineers are often tasked with the job of creating seals around ceramic feedthroughs. Sometimes the seal is as simple as an epoxy or glue. For those situations that require a stronger seal, a mechanical or glass seal is necessary. The ceramic feedthrough is often a vital part of the seal and is used in situations where the highest performance is expected.

The Advantages of Ceramic vs. Glass

Ceramic feedthroughs offer some important benefits, superior resistance to both mechanical and thermal shock, an ability to resist corrosion, and protection from leaks. Glass can resist the effects of temperature changes, fluctuating pressure, and variations in humidity. Ceramic, however, provides better performance. Ceramic-to-metal applications require complicated engineering and typically comes at a higher cost.

Who Uses Ceramic Feedthroughs?

There are some industries that require the high level of performance delivered by ceramic feedthroughs. These industries include the aerospace market, medical implant device manufacturers, and industries using high voltage or current laser applications.

Look for Providers of Great Quality Feedthroughs

Manufacturers can protect the components of the glass and ceramic feedthroughs by working with internally-sourced ceramics and other materials. It’s important to learn how to recognize the best types of hermetic seals and feedthroughs; working with knowledgeable manufacturers can help. You can protect the integrity of your project by choosing top-quality ceramic feedthroughs from reputable providers.