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Subminiature-C Feedthroughs - KF Flange Mount

These multipin hermetic feedthroughs are designed for space-constrained applications where Subminiature-D feedthroughs are too large to be used. The Subminiature-C's compact design allows small flange mounts. 1.33"CF and KF16 style flanges can be used.

Subminiature-C feedthroughs come in 9-pin configurations. The gold-plated pins are in a straight-through design, hermetically sealed, and electrically insulated in a stainless steel shell using a glass-ceramic seal.

Both the atmosphere side and vacuum side connectors are fitted with socket head screws that provide a locking mechanism to the feedthroughs, also acting as a keyway for alignment. Vacuum side Kapton insulated cables are used along with PEEK connectors for the demands of UHV applications.


  • 9-pin configuration
  • 250C High-Temperature Rated
  • HV Compatible Construction
  • QF Flange Mounts
  • Kapton Insulated Vacuum Cables
  • PEEK Vacuum Connectors
  • Delrin Atmosphere Connectors
  • Custom Versions Available on Request

Specifications Table

Vacuum Application HV: 1x10-8 Torr
Temperature Flange:  KF: 150°C
Connector, Air:  80°C
Connector, Vacuum:  250°C
Thermal Gradient:  25°C per min.
Materials Shell:  Stainless Steel
Pins:  Gold Plated,Ni-Fe Alloy
Seal & Insulation:  Glass-Ceramic
Connector, Air:  Delrin
Connector, Vacuum:  PEEK

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+1 800 245 1656
  • special case note
    Looking for accessories? Please view our Ribbon & Round Cable Assemblies page for the necessary parts.
  • special case note
    Kit includes air and vacuum connectors with 8' and 19" cable lengths, respectively.
  • special case note
    Assembly temperature ratings must be adjusted to that of the lowest rated component.
  • special case note
    The electrical and thermal ratings specified are of safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. All electrical ratings are based on operation with one side in dry atmosphere and the other side in vacuum of less than 1 x 10-4 Torr. All VacuCAD files as well as any dimensions shown or listed in our ordering tables do not include manufacturing tolerances and are provided for reference only.

Ordering Table

(Click column headers to sort data)

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Feedthrough Selection Guide
Feedthrough Selection Guide
Finding the right feedthrough has never been easier with our step by step Feedthrough Selection Guide. You can narrow down our feedthrough offering by simply choosing from a variety of different options suitable to your requirements. If you can't find the feedthrough you need or want a custom configuration, please contact us by clicking here or call +1 800 245 1656 with your inquiry.
Contact Us - Subminiature-C Feedthroughs - KF Flange Mount