Subminiature-D CF Flange

Subminiature-D (Sub-D) Feedthroughs, Conflat CF Flanges.

Subminiature-D or Sub-D multi-pin hermetic vacuum feedthroughs are designed for applications where space is limited inside your vacuum chamber and where many feedthrough penetrations are required.

The compact and unique 9, 15, 25, and 50-pin feedthrough design allows installation into many CF flange sizes and styles.  Gold-plated pins are arranged in a straight-through pin-to-pin design and are hermetically sealed and electrically insulated in a stainless steel shell using the latest in glass-ceramic bonding technology.

Sub-D Feedthrough flange features:

  • 9 to 100-pin interface available off-the-shelf
  • Call for custom feedthrough configurations
  • High temperature rated to 250°C (Feedthrough)
  • UHV compatible construction
  • Conflat® compatible mounts
  • Voltage rating: 500 VDC max.
  • 5 AMPs per pin (20% of pins at any given time)
  • Pins: Au plated, Ni-Fe alloy
  • UHV rated 1x10-10 Torr

All feedthroughs listed here are mounted on Conflat CF Flanges that incorporate the industry standard "captured copper gasket" sealing principle, making it easy to mount to your existing CF Flange ports.

Please select a Subminiature-D feedthrough flange from the list above for more details about that item.

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subminiature-d feedthroughs
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Air-service female cable assembly, 101040, composite connector and nine conductor cable (6)
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UHV Feedthrough, 100200 Conflat® compatible flange
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UHV female cable assembly, 100330, PEEK connector and Kapton® Insulated wire (6)
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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.
 

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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.
     
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