The 28297 is a standard wire harness feedthru with a flange (Varian-style) vacuum face seal, featuring a stainless steel housing and aluminum clamps, designed for hermetic sealing of conductors in vacuum or pressure environments. It supports up to 20 conductors and is rated for operating conditions from 4 K to 200°C and pressures from 1×10⁻⁹ Torr to 15,000 psi. The unit is compatible with thermocouple wires and comes with defined lead lengths specified by suffixes, such as 28297-3-4 for 3-foot and 4-foot leads. Its design allows integration of multiple conductor types, including shielded wires and thermocouples, within a single assembly.
CF (ConFlat*) flanges use a clamping mechanism to hermetically seal a copper gasket between the chamber wall and the feedthrough. This minimizes the effect of tightening the housing rather than the jamnut in a vacuum face seal design. A series of bolts secure the feedthrough directly to the chamber wall. CF flanges can be more time consuming to install and uninstall than a KF-style flange, with specialty tooling and know-how. Our CF feedthroughs are mounted from the atmospheric side of the chamber, giving greater accessibility to the user to install the feedthrough properly.
Douglas Electrical Components manufactures hermetic electrical feedthroughs utilizing a CF flange to create convenient mounting and installation. Our vacuum rated CF feedthroughs are available in various electrical connections including connectors, wires, cables, and optical fibers.
Our epoxy technology permits us to not only create high density feedthroughs, but also combine multiple interfaces into the same feedthrough flange, reducing overall feedthrough cost and saving space. This can be as simple as integral thermocouple wire to connectorized harnesses with integral shielding, strain relief, and sleeves.
Our CF feedthroughs provide further flexibility with their ability to have different electrical interfaces on each side of the chamber. Many customers will combine connectors with integral wires to simplify installation in or out of a vacuum chamber. Douglas can integrate the exact conductors you need to transmit power or signal.
Work with our technical sales engineers to confirm the electrical connection you prefer and we’ll design and quote the feedthrough that best aligns to your needs. Additionally, we offer competitive lead times with expedites as low as one week possible.
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*ConFlat is a registered trademark of Agilent Technologies
Features
PERFORMANCE CAPABILITIES
ELECTRICAL CONNECTION TYPES
COMMON CONNECTOR TYPES
CONNECTOR BRANDS WE SEAL, INTEGRATE, & CUSTOMIZE
| Douglas Electrical Components | |
|---|---|
| Product Category | Electrical Feedthroughs |
| Product Number | 28297 |
| Product Name | 20 Conductor Conflat Hermetic Wire Feedthroughs |
| Electrical Feedthrough Type | Instrumentation; Thermocouple |
