SG600

solution gallery 600
Ceramax The best
hermetic sealing
material
CERAMAX® - INCOMPARABLE HERMETIC PERFORMANCE
PROVIDING A HERMETIC SEAL THROUGH THE LIFE OF YOUR PRODUCT
CERAMAX® is a dispersion-strengthened, devitrifying,
polycrystalline ceramic compound proprietary to SRI Hermetics Inc.
Devitrifying CERAMAX® compounds are very stable crystalline
materials that offer performance beyond the capabilities of
conventional glass seals. These ceramic compounds have
properties that enable them to be reheated to a very high
temperature without showing any flow or loss of seal integrity. The
CERAMAX®-to-metal seal is accomplished by active chemical
bonding of the CERAMAX® compound to an oxide formed on the
pin and case surfaces. Our products, using the CERAMAX® seal,
have incomparable performance in applications around the world.
SUPERIOR ELECTRICAL AND MECHANICAL PERFORMANCE
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 MILSTD-883 for hermeticity (≤1x10-9 cc/sec He at one atmosphere ∆P), insulation resistance (>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.
THE SUPERIOR TECHNOLOGY FOR YOUR APPLICATION
CERAMAX® has been used to provide superior hermetic performance in many applications.
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High-performance multi-pin electrical connectors for aerospace and defense
Hermetic bulkhead feedthroughs for the harsh conditions of oil exploration
Fiber optic feedthroughs for high-speed signal transmission
Thermal battery headers with high-conductivity pins
Feedthroughs for transducers such as accelerometers and thermocouples
Cryogenic applications such as thermal weapon sight
3950 Dow Road
Melbourne, FL 32934
www.srihermetics.com
Tel 321.254.4067 Fax 321.752.9221
[email protected]