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Subminiature-D CF Feedthrough Flanges

Subminiature-D Interface

Accu-Glass Products’ UHV 9, 15, 25 and 50-pin Subminiature-D instrumentation feedthroughs are constructed with pin arrangements per Mil-DTL-24308 (formerly Mil-C-24308) specification. All pins are gold-plated and arranged in a straight through pin-to-pin design, hermetically sealed and electrically insulated into a stainless steel shell using the latest in glass-ceramic bonding technology.

Ultrahigh vacuum compatible cable assemblies are fitted with PEEK (polyether-etherketone) polymer connectors and Kapton® insulated ribbon cable to meet the rigorous demands of ultrahigh vacuum environments. Each Subminiature-D vacuum connector includes two (2) captured stainless steel socket head screws that securely lock a connector to its mating feedthrough. To eliminate virtual leaks, in-vacuum captured screws are vented where required.

Subminiature-D multipin assemblies with up to 250 pin configurations are routinely fabricated. Custom solutions with over 1,000 pins have also been engineered and produced.
Tip — Accu-Glass Products’ Conflat CF and/or ISO KF/LF 'Conical Reducers' are ideally suited for the expansion of feedthrough capacity on smaller chamber flanges… like fitting a 50-pin 4.50-inch CF flange mounted feedthrough using a 2.75-inch CF chamber port. See AGP’s CF and ISO conical reducers here.
 

Features

  • Subminiature-D 9 to 100 Pin configuration
  • High temperature rated to 250°C
  • UHV compatible construction
  • Conflat® and ISO NW compatible mounts
  • Kapton® insulated vacuum cables
  • PEEK connector with locking screws
  • Air-service cable assemblies
  • Custom solutions on request

Specifications

Electrical 
Voltage 1, Maximum500 VDC
Current 2, Maximum5 A
Material 
Shell, Stainless Steel304
Pins, Au platedNi-Fe
Seal / InsulatorGlass-Ceramic
Connector, AirComposite
Connector, UHV 3PEEK
Connector, HV 3DAP / Stainless
Vacuum Range 4 
UHV, Ultrahigh vacuum1x10E-10 Torr
HV, High vacuum1x10E-8 Torr
Temperature Range 5 
Feedthrough-200 to 250°C
Flange, Conflat®-200 to 450°C
Flange, ISO150°C
Connector / Cable, Air80°C
Connector / Cable, UHV PEEK250°C
Connector / Cable, HV, DAP125°C
Thermal Gradient, Maximum25°C/minute
Notes 
  1. Electrical ratings are maximum test values, with vacuum side at ≤ 1x10-4 Torr. Feedthroughs are intended for instrumentation applications carrying low level signal voltage and current.
  2. Per pin maximum @ 20°C. For proper heat dissipation, a maximum of 20% of pins on a feedthrough may carry the maximum pin current at any given time.
  3. PEEK is a polyether ether ketone thermoplastic. DAP is a glass-filled diallyl phthalate.
  4. Leak tested to 5x10-10 Standard cc/sec of He.
  5. Overall assembly ratings must be adjusted to that of its lowest rated component. For cryogenic service, the lowest recommended temperature is -200°C
  6. Unless designated a 'kit,' connectors and cable assemblies are not included with feedthrough and must be purchased separately.