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High Voltage CF Feedthroughs

High Voltage / Power Feedthroughs


Accu-Glass Products’ High Power hermetically-sealed feedthroughs are available in three power ratings up to 20,000 volts and to 30 amperes for use in high and ultrahigh vacuum environments. Feedthroughs for 5, 10, and 20 kVDC, and 30A are offered.

All three power versions are offered on Conflat® compatible CF metal seal and ISO NW KF elastomer seal flanges. High purity Alumina ceramic ­insulators provide electrical isolation, while OFE copper conductors offer maximum current carrying capacity. The high purity ­Alumina ceramic is bonded and sealed to low ­expansion metals in a vacuum furnace environment using precious and semi-precious high temperature vacuum tube grade braze alloys. For custom feedthrough solutions or for ratings other than these standard products, please contact the factory for pricing and information.

Molded air-side silicone rubber boot-like cable connectors provide reliable and environmentally sealed high voltage connections. Vacuum compatible BeCu (Beryllium-Copper) push-on or in-line contacts, and Kapton® insulated wiring are available for in-vacuum connectivity

CF Flange Interface

Features

  • High Voltage to 20kVDC
  • High Current to 30 Amps
  • High temperature rated to 250°C
  • UHV compatible construction
  • Conflat® and ISO compatible mounts
  • Kapton® insulated vacuum cables
  • PEEK connector with locking screws
  • Air service cables / Boot Connectors
  • Custom solutions on request

Specifications

Electrical 
Voltage 1, Maximum5, 10, 20 kVDC
Current 2, Maximum30 A
Material 
Shell, Stainless Steel304
Pin, ConductorCu, OFE
Ceramic InsulatorAlumina
Connector, AirSilicone
Connector, UHV (Au Plated)BeCu
Vacuum Range 
UHV, Ultrahigh vacuum1x10E-10 Torr
HV, High vacuum1x10E-8 Torr
Temperature Range 2 
Feedthrough250°C
Flange, Conflat®450°C
Flange, ISO150°C
Connector / Cable, Air125°C
Connector / Cable, UHV PEEK250°C
Thermal Gradient, Maximum25°C/minute
Notes 
  1. Electrical ratings are maximum test values, with vacuum side at ≤ 1x10-4 Torr. Feedthroughs are designed for high power applications.
  2. Overall assembly ratings must be adjusted to that of its lowest rated component. For cryogenic service, the lowest recommended temperature is -200°C
  3. Unless designated a 'kit,' connectors and cable assemblies are not included with feedthrough and must be purchased separately.