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Multipin Feedthroughs |
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| Multipin is the classification given by ISI to all
feedthrough products containing one or more conductor pins, which
are also fitted with air or vacuum side threaded circular
connectors. Multipin feedthroughs are commonly used for the transmission of electrical signals and/or low power applications. They are typically referred to as Instrumentation Feedthroughs, because of their use in instrumentation applications such as electron microscopy, surface analysis and semiconductor process controls. |
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| ISI Multipin Feedthroughs standard types are as follows: | |
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Circular Connectors 3 to 7 pins, was developed for applications requiring moderate pin density while maintaining relatively small package size. These products are fitted with dependable, screw type air-side connectors.
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ISI offers 3 standard vacuum mount styles: Del-Seal™ CF mount style parts Kwik-Flange™ KF mount style parts Weldable mount style parts |
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MS Circular Connectors 4 to 35 pins, was developed for similar purposes, but fitted with industry standard threaded connectors, which meet MIL-C-5015 specifications. These feedthroughs are offered with electrical ratings up to 1750 volts and 23 amps. |
Single Ended ISI offers 3 standard vacuum mount styles: Del-Seal™ CF mount style parts Kwik-Flange™ KF mount style parts Weldable mount style parts
Double Ended
High Current MS |
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Type-C, the latest addition to a comprehensive line of hermetically sealed instrumentation feedthroughs. This is a circular geometry 9 pin and 23 pin feedthrough designed for applications where space is at a premium or where conventional Subminiature Type-D connections will not fit. Its circular geometry allows the installation of this product into very small vacuum flanges including the popular 1.33" Del-Seal™ (DN16 CF) metal seal flange as well as K075 (NW16) elastomer seal quick-style KF flanges. Gold plated pins are hermetically sealed and electrically insulated in a stainless steel shell using the latest in ceramic bonding technology. Connectors are available separately. Subminiature-C air and vacuum side connectors are fitted with captured stainless steel socket head screws which provide a means of securely locking them to their mating feedthroughs. All in-vacuum connector screws are vented where required. The feedthroughs mating-screw boss doubles as a polarizing key. Air to vacuum pin positions are identified with a permanent surface indentation to facilitate the pin assignment operation.
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Type-C Instrumentation / 9 pin ISI offers 2 standard vacuum mount styles: Del-Seal™ CF mount style parts Kwik-Flange™ KF mount style parts Type-C Instrumentation / 23 pin |
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Type-D subminiature feedthroughs are high density multipin instrumentation feedthroughs constructed with pin
arrangements designed to meet MIL-C-24308 specifications. Nine, fifteen,
twenty-five or fifty gold plated pins are hermetically sealed and electrically insulated in a stainless steel shell using the latest in
glass ceramic bonding techniques. Each feedthrough assembly is supplied with an atmosphere side connector which requires
customer wiring. Additional units may be purchased as standalone items. For vacuum side connections a Kapton® insulated invacuum
ribbon cable and PEEK material Type-D connectors meet the rigorous demands of UHV environments. In-vacuum
cables and connectors are not included with the feedthrough assembly and
must be purchased separately. |
ISI offers 2 standard vacuum mount styles: Del-Seal™ CF mount style parts Kwik-Flange™ KF mount style parts |
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Type-D subminiature Accessories In-vacuum ribbon cable assemblies are designed to complement the Type-D hermetic feedthrough product line. They are offered in two standard configurations. In-vacuum ribbon cable assemblies are constructed with UHV compatible materials including PEEK (polyetheretherketone) thermoplastic connectors and Kapton® wire insulation. Individual conductors are electrically insulated with a Kapton® insulating film. Conductors are then bundled into ribbon cable form by weaving these with PEEK monofilament. Connectors are fitted with gold plated female crimp contacts which mate with ISI Type-D feedthroughs. Cable assemblies are available standard with termination on one end and no termination on opposite end. Custom termination of second end is available at an additional charge. PEEK connectors are secured to the UHV side of a Type-D feedthrough using the two 4-40 vented cap screws provided. Individual in-vacuum insulated stranded and coaxial wires are found in In-Vacuum Insulated Wire section. |
D-Connector In-Vacuum Ribbon Air-Side Connector In-Vacuum Sockets In-Vacuum Connector |
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| INTENDED OPERATING CONDITIONS Electrical ratings are determined by various factors, including dielectric strength, geometry and system operating pressure. Please note that all ISI catalog products are electrically rated for operation with one side in dry atmospheric conditions and the other side in a vacuum environment with a maximum system pressure of 1 x 10-4 Torr. We advise that users make allowances for deviations from stated operating parameters and take adequate safety precautions when feedthroughs are operated at high voltages or high currents. |
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