Request Quote

Coaxial feedthroughs are designed to transmit signals and data in vacuum and pressurized environments including vacuum chambers, control cabinets, and gloveboxes. Coaxial feedthroughs feature two conductors sharing a common axis. The inner conductor carries small signals and the outer conductor shields signals against electromagnetic interference. At Douglas Electrical Components, we manufacture custom hermetic coaxial feedthroughs to meet specific customer requirements. Our hermetic coaxial feedthroughs can be easily integrated with various connectors, including SMA – for low and high frequency, BNC (Type N, Mdot), MCX, MHV, SHV, SMC, TNC, UHF, and more. In addition to this, customers can choose from a standard or custom bulkhead mechanical interface.

Douglas’s engineering team will work with you to integrate hermetically sealed coax connectors or wire into the bulkhead fitting. Our SMA bulkhead feedthroughs are a popular choice for signal and data transmission in high-frequency applications. These SMA bulkhead feedthroughs feature space-saving designs and ensure shielded, low-loss transmission of high-frequency signals through the wall of vacuum systems. We can hermetically seal virtually any coaxial connector. We can also hermetically seal coaxial cables in any wire length. In addition to this, customers can also choose from a wide variety of hermetic feedthrough mounting styles, including jam-nut bulkhead, CF flange, KF flange, radial O-ring, and customized options. Our coaxial feedthroughs mounted on KF-style flanges are widely used in high vacuum environments for demountable connections. Contact us today to build the best hermetic coaxial feedthroughs for your vacuum applications.

Featured Standard Designs
Part Number Housing Style Description
57915 QF50 Flange 4 female BNC connectors x 4 female BNC connectors (receptacles)
57046 Vacuum Face Seal Six (6) SMA Jack x SMA Jack
56023 Vacuum Face Seal Four (4) SMA Jack x SMA Jack
47188 1/2″-20 UNF 2A Vacuum Face Seal SMA Jack x SMA Jack

Features

TYPES OF COAXIAL CONNECTORS
  • 10-32, BNC, MCX, MHV, Type N, SHV, SMA, SMC, TNC, UHF, and more
COMMON BULKHEAD INTERFACES
  • Jam-nut bulkhead
  • CF Flange
  • KF Flange
  • Radial O-ring
  • Vacuum face seal
  • Threaded connection (NPT, SAE, etc.)
  • Back-potted assembly

Products

FAQ

Does Douglas offer miniature hermetic coaxial feedthroughs?

Douglas Electrical Components can manufacture miniature hermetic coaxial feedthroughs with a jam-nut type assembly.  Overall, we traditionally package our feedthroughs for vacuum environments as a complete assembly with multiple coaxial connection points.

 

Additionally, Douglas has the design capability to integrate other types of connectors into the same coax feedthrough assembly, such as D-sub, RJ-45, and Micro-D connectors.

What is the typical lead time for a coaxial hermetic feedthrough?

Lead time is dependent on the level of customization of the design as well as sourcing of non-stock items.  Overall, our lead time is typically 6 weeks AAO (after acceptance of order).

Image Library

Images
Coax Group Photo

hermetic coaxial feedthrough group

hermetic coaxial feedthrough group photo showing variety of configurations

Hermetic Vacuum face seal feedthrough with 6 SMA connectors

Hermetic PotCon Coax Feedthru

Hermetic Vacuum face seal feedthrough with 6 SMA connectors

hermetic coaxial feedthrough with NPT threads and coaxial wires

Hermetic Coax Wire Feedthrough

Hermetic coaxial feedthrough with NPT threads and coaxial wires

Hermetic coaxial bulkhead connector with NPT mechanical interface

Hermetic Coaxial Bulkhead Connector

Hermetic coaxial bulkhead connector with NPT mechanical interface

hermetic coaxial feedthrough - type-n

Hermetic Type-N Coaxial Feedthru

Type-n hermetic coaxial feedthrough design with CF flange

SMA Hermetic Feedthrough - PotCon

SMA Hermetic Feedthrough - PotCon

PotCon SMA Hermetic Feedthroughs can integrate multiple coaxial connectors into a single feedthrough.

PotCon SMA hermetic feedthrough connector

PotCon SMA hermetic feedthrough connector

PotCon SMA hermetic feedthrough connector with UNF thread. Select single connection feedthroughs or integrate into a larger plate assembly.

Portplate high frequency SMA flange feedthrough

Portplate High-frequency SMA Flange

Portplate high frequency SMA flange feedthrough incorporates multiple coaxial connections into a single flange.

Hermetic BNC connector with integral wires

Backpotted BNC connector

Hermetic BNC-99 connector with integral wires