Release date: 2010-08-17

SRI Hermetics, Inc. Announces the Release of their Hermetic Double-ended 9 and 23 Pin Sub C

(Newswire Today) —  Melbourne, FL, United States, 2010-08-17 - The laser weldable hermetic sub-C was designed to fit into a 1.33" conflat flange or an NW16 flange where traditional sub-Ds will not fit. Standard design is made of 304L SST, but aluminum and titanium versions are available.


SRI Hermetics’ laser weldable hermetic sub-C connectors are designed for applications where space is limited or at a premium. The sub-C can be mounted on an industry standard 1.33” conflat flange or an ISO-NW16KF flange where the traditional sub-D will not fit. These units are designed to be double-ended with male pins on either side for ease of connection. SRI Hermetics offers both atmosphere and vacuum side connectors and cables. The vacuum cables are made from PEEK and have Kapton wires. The atmospheres side connector is made from Delrin and comes wired with 96” of cable. The standard shell material is 304L stainless steel, but aluminum and titanium units are available. Custom configurations are available and the factory should be contacted with your requirements. The 9 pin version features 0.040” diameter contacts while the 23 pin unit features 0.030” diameter contacts. The contacts are made of BeCu for maximum current carrying capabilities, 10 amps per contact. Each contact is individually sealed with CERAMAX®, our proprietary ceramic.

The CERAMAX® family has been formulated to seal a wide range of materials, including stainless steel, titanium, nickel-iron alloys, Inconel® and copper alloys. Our direct sealing to copper alloy pins allows for much greater electrical current carrying capability than conventional glass seal technology. For example, a standard .018 diameter copper alloy contact can carry up to 10 amps. Our hermetic seals meet the requirements of MIL-STD-883 for hermeticity (less then 1x10-9 cc/sec He at one atmosphere ), insulation resistance (less then 5,000 megohms at 500VDC) and dielectric withstanding voltage (no breakdown at 100VAC/mil CERAMAX®) – even in nanominiature designs. Electrical breakdown always occurs in the air across the CERAMAX® surface – never within the CERAMAX® itself. CERAMAX® is chemically resistant to all chemicals typically used in the hermetic packaging and electronic systems integration industries. Although the non-amorphous CERAMAX® structure is not ideal for high frequency RF applications, the material is well suited for high stress, DC applications. CERAMAX® can typically be relied on to operate in a temperature range of –269o to +450oC.

SRI Hermetics ( also offers a full line of hermetic D-subs, Micro-D, RF feedthroughs, and circular connectors in aluminum and titanium. All of these parts can be integrated at SRI Hermetics into custom hermetic electronic packages.


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