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Electrical Feedthrough Accessories

Electrical and thermocouple feedthroughs have a variety of connector and cabling accessories including:

  • Standard air and vacuum connectors
  • Thermocouple extension wires
  • Regular air and vacuum compatible wires
  • Copper braid there are some less-obvious but nevertheless useful cable/lead accessories

However, in addition to these well-known accessories there are other, less obvious but useful devices:

  • Ceramic drilled disks for separating multiple bare conductors on the vacuum side of a feedthrough
  • Ceramic fish-spine beads for insulating single conductors, enabling the central conductor to be flexible while maintaining good high voltage insulation
  • Metal barrel connectors to provide screw connections between plain bare wire

Electrical Cable Terminations

Termination B — Contact Style

  • Basic cable terminations feature push-on contacts for single-end 0.094" diameter conductor pin
  • Ideal for quick-connect applications where non-continuous coaxial shielding** is acceptable
  • Spring retention design limits the temperature rating to 200°C


Termination C — In-Line Style

  • Used for non-continuous coaxially shielded** applications
  • Mechanical screw clamping design
  • Temperature rating of 400°C




Terminations E & F — BNC/MHV

  • High-temperature versions of the traditional bayonet naval connection, 400°C
  • Connect double-ended BNC or MHV coaxial feedthroughs mounted in the vacuum wall to any vacuum component fitted with a female BNC or MHV connector
  • Use where continuous coaxially shielded* applications are required
NOTE: Do not cross-mate BNC and MHV components

Termination M — Microdot

  • Coaxial
  • Designed for use with Between Series BNC-Microdot Feedthroughs
NOTE: These cables must be shielded when used in vacuum coating applications. Failure to do so will lead to electrical degradation and eventual failure.



* Continuous coaxial shielding: The ground shield of the coaxial assembly has no breaks in electrical continuity from the assembly to the earth ground plane.

** Non-continuous coaxial shielding: The ground of the coaxial assembly has a break in electrical continuity from the assembly to the earth ground plane.

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