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HERMETIC CONNECTORS

SOURIAU PA&E designs and manufactures a wide variety of hermetic DC connectors, RF connectors, machined housings and integrated hermetic electronic packaging for use in extreme environments that demand superior mechanical and electrical performance.

Hermetic Connectors - RF Connectors

Connectors manufactured by SOURIAU PA&E are essentially designed to perform two functions: to carry signal or current in and out of an electronic package and to ensure no outside elements can enter the electronic package.

In general, the degree of protection varies by connector design, construction and materials. Environmentally sealed connectors are designed to stay sealed in relatively benign surroundings such as underwater or in changing weather. The degree of protection these types of connectors offer can be defined by an Ingress Protection Rating standard. For example, an IP 68 rated connector will not allow the ingress of dust or water at 1+ meter immersion.

Defining Hermetic

Merriam-Webster defines hermetic as ‘being airtight or impervious to air’ and hermetic connectors are SOURIAU PA&E’s area of specialization. But even that seemingly straight forward definition is subject to interpretation, because essentially, no seal is absolutely air tight.

The common method for measuring a connector’s leak rate involves forcing helium through a connector in a vacuum environment. SOURIAU PA&E typically defines ‘hermetic’ as a leak rate of less than 1x10-9 (0.000000001) cc per second of helium at 1 atmospheric differential pressure. Other manufacturers consider higher leak rates as high as 1x10-5 hermetic where SOURIAU PA&E considers anything below 1x10-9semi-hermetic.’

Hermetic Connector Drivers

A hermetic requirement connector is typically driven by three key factors:

    1. Environmental factors
      - Extremely high or low temperature exposures
      - High pressure environments
      - Corrosives
    2. Susceptibility of sensitive electronics to:
      - Pressure
      - Temperatures
      - Gassing
    3. Tolerance for risk
      - Repair or replacement in the field risky, difficult or impossible
      - Costly production delays or service disruptions are unacceptable
      - Mission-critical applications that can’t fail

SOURIAU PA&E’s interconnect products are designed for use in defense, space, medical and commercial applications where environmental conditions make an extremely rugged and reliable hermetic seal an absolute requirement. They are hard at work in life-supporting medical devices, oil-drilling tools deep below the earth's surface, stealth fighter aircraft, and in many other demanding applications.

SOURIAU PA&E's approach to hermetic interconnect designs provides maximum versatility which can lower over-all product cost. SOURIAU PA&E utilizes unique materials in its manufacturing processes and offers a range of manufacturing capabilities – machining, plating, vacuum brazing, laser welding, and more -- at a single location. This integrated manufacturing approach can reduce complexity and risk on your next project. We have a talented staff of application engineers with deep experience in developing and manufacturing custom solutions for extreme environments who are ready to assist you with your next project. Let us know how we can help.

Extreme applications require components that perform flawlessly and retain their original properties even in the harshest of environments. SOURIAU PA&E's hermetic DC connectors and RF connectors can withstand mechanical and thermal stresses that far exceed the limits of most conventional interconnection solutions.

Hermetic DC Connector Configurations

Standard Configurations

SP=Standard Profile
LP=Low Profile

Nano-D:
.025" pitch
.009" pin Ø
Junior-D:
.030" pitch
.010" pin Ø
Micro-D:
.050" pitch
.018" pin Ø
Sub-D:
.100" pitch
.040" Pin Ø
Circular:

SP
LP

LP flanged
LP not flanged
SP not flanged
SP double ended
LP flanged
LP not flanged
SP flanged
SP o-ring flanged
SP double ended
SP solder in

SP flanged
SP o-ring flanged
SP double ended
SP solder in
38999 Compatible
Material Compatibility
Designed for aluminum, titanium or iron/nickel alloy applications
Contact Material
303 stainless steel/Inconel
X-750
Beryllium copper CDA alloy 172/173
Shell Finish Options
Passivated, nickel/gold plated or chromate conversion coated as applicable
Contact Finish
Nickel/gold plating

Interface

Per MIL-DTL-32139
Proprietary
Per MIL-PRF-83513
Per MIL-DTL-24308
Per MIL-DTL-38999
# of Contacts
9, 15, 21, 25, 31, 37, 51
9, 15, 21, 25, 31, 37
9, 15, 21, 25, 31, 37, 51, 100
Per MIL-DTL-24308
Per MIL-DTL-38999
Optional Solder Cup
Contact SOURIAU PA&E for recommended method
Accepts 24 to 30 AWG solid/stranded wire
Contact SOURIAU PA&E for recommended method
Accepts 24 to 30 AWG solid/stranded wire
Leak Rate
Less than 1X10-9 cc/sec helium at 1 atmospheric differential pressure
Dielectric Withstanding Voltage
Connectors provide greater than 5,000 Megohms at 500 VDC when tested in
IAW MIL-STD-1344, Method 3003
Corrosion
Connectors exhibit no evidence of breakdown or flashover when tested in
IAW MIL-STD-1344, Method 3003
Operating Temperature
-65°C to 200°C

Hermetic RF Connector Configurations

Standard Configurations


Flange Mount
Push-On
Thread-In

Laser Weld Push On (LWP®)

"Little" Laser Weld Push On (LLWP®)

Solder Mount Push-On (SMP)
'Small' Solder Mount Push-On (SSMP)
SMA
SSMA
Material Compatibility
Designed for aluminum, titanium or iron/nickel alloy applications
Contact Material
Iron/nickel alloys
Shell Finish Options
Passivated, nickel/gold plated or chromate conversion coated as applicable
Contact Finish
Nickel/gold plating
Pin Diameter Options
.012”, .015”, .018”, .020” and custom

Interface

Per MIL-STD-348
Nominal Impedance
50 Ohms
Insulation Resistance
Connectors provide greater than 5,000 Megohms at 500 VDC when tested in IAW MIL-STD-1344, Method 3003
Leak Rate
Less than 1X10-9 cc/sec helium at 1 atmospheric differential pressure
Dielectric Withstanding Voltage
Connectors provide greater than 5,000 Megohms at 500 VDC when tested in
IAW MIL-STD-1344, Method 3003
Corrosion
Connectors exhibit no evidence of breakdown or flashover when tested in
IAW MIL-STD-1344, Method 3003
Operating Temperature
-65°C to 200°C

Hermetic Connector Products