CERAMIC FEEDTHROUGHS
AdTech Ceramics is the US leader in manufacturing ceramic feedthroughs for use in military, aerospace, medical, and high reliability industrial applications. Ceramics are extremely reliable in high vacuum applications and compatible with metals such as Titanium, AlSi, Kovar, Alloy 42, CuMo and CuW. AdTech has a patented split via concept to provide an exceptionally reliable method of edge metallization without concern for processing damage at the point where metallization wraps around the edges.
Ceramic feedthroughs can support high frequency applications up to 30GHz and offer a coplanar surface for wire bonding.
Please see below for additional material specifications and download the Design and Capabilities Guideline for layout specific design rules.
- Ceramic Feedthrough products
Typical Package Configurations
- Custom HTCC Products
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- Amplifier Housings
- Ceramic/Metal Packages
- Crystal/Oscillator/ SAW Packages
- Custom Pin Grid Arrays (PGA)
- High Frequency Feedthroughs
- Hybrid Packages
- Leadless Chip Carriers (CLCC)
- Multichip Modules (MCM)
- Optical Packages
- Pad Array Carriers (BGA)
- Power Dissipation Packages
- Quad Flatpacks (QFP)
- Quad No Lead (QFN)
- Sensor Packages
- Crystal/Oscillator/ SAW Packages
- AdTech Ceramics manufactures custom designed packages specifically for crystal/oscillator/SAW frequency control devices.
- Optoelectronic Packages
- We offer custom-designed ceramic packages for CMOS, CCD, infrared and ultraviolet image sensors. The rigidity and high strength of our ceramic materials systems make them perfect for a range of image sensor applications.
- Hermetic / High Frequency Feedthroughs
- AdTech Ceramics specializes in hermetic ceramic feedthroughs for DC to Ka band applications. AdTech's patented "split-via" concept provides an exceptionally reliable method of edge metallization without concern for processing damage at the point where metallization wraps around the edges.
- Ball / Pad Grid Arrays
- In addition to standard Ball/ Pad grid array layouts, AdTech Ceramics can co-fire refractory metal bumps on BGAs that will retain their shape through multiple solder reflow operations.
- Ceramic/Metal Packages
- AdTech Ceramics' extensive experience with metal machining combined with multi-layer co-fire ceramics brazing technology provides an avenue for complex hermetic packaging applications. Ceramic/metal housings provide superior I/O density, electrical functionality and superior mechanical robustness over glass/metal seal technologies.
- Microwave Packages
- AdTech produces HTCC and AlN packages for microwave applications in the L through Ka band frequency ranges. Our partner's design assistance utilizes state of the art 3-D Finite Element Method (FEM) simulators and proprietary numerical simulators.
- Pin Grid Arrays (PGA)
- Custom Ceramic Pin Grid Array packaging for semiconductor microprocessors as well as high temperature, optoelectronic and multichip module applications.
- Multichip Modules
- Utilizing multi-layer co-fired ceramics and metal components, AdTech Ceramics specializes in manufacturing custom Multichip Modules in a variety of hermetic package configurations.
- Alumina Substrates with Hermetic Vias
- AdTech Ceramics' proprietary 92% alumina formulation allows for hermetic straight through vias. Surface finished can be polished to .000005" (.127um) commonly used for thin/thick film substrate.
- Power Dissipation Packages
- AdTech Ceramics' HTCC has a higher thermal conductivity than organic PWB's or LTCC. High thermally conductive materials such as BeO and CuW can be brazed to HTCC packaging as heat sinks.
- Leadless Chip Carriers (LCC)
- Our custom-made ceramic leadless chip carriers are suited for applications that warrant a surface mounted low profile package having low inductance.
- Optical Packages
- HTCC is a practical choice or optical applications packages due to hermeticity, flatness capability and stable over a wide temperature range.
- High Lead Count Packages
- With in-house chemical milling and punching capabilities, AdTech offers lead pitch to 0.020" centerlines.
- Advantages of HTCC Packages
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- Cost-Effective
- Design Flexibility
- Environmental Resistance
- Hermeticity
- Mechanical Rigidity
- Resistance to Mechanical and Thermal Shock
- Surface Flatness
- Thermal Dissipation
- Industries Served
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- High Frequency/High Temperature Electronics
- High Reliability Industrial/Commercial
- Information
- Medical
- Military
- Optoelectronics
- Telecommunications
- Certifications
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- DFARS 252.225-7014 (Alternate 1) Compliant
- ISO 9001:2008 Certified
- AS9100C Certified
- ITAR Compliant
- MIL-I-45208
- RoHS Directive Compliant
Material Properties for 92% Alumina (Al2 O3 )
- Color
- white or dark alumina
- Density
- 3.62 g/cc (0.131 #/cu. in.)
- Hardness
- 1207 (Knoop) kg/mm 2
- Flexural Strength
- 443 MPa (64 psi x 10 3 )
- Youngs Modulus
- 275 GPa (40 psi x 10 6 )
- Shear Modulus
- 112 GPa (16 psi x 10 6 )
- Surface Finish
- <1.14 µm (<45 µ")
- Thermal Expansion (25-300°C)
- 6.57 10 -6 /ºC (3.64 10 -6 /ºF)
- Thermal Expansion (25-500°C)
- 7.16 10 -6 /ºC (3.98 10 -6 /ºF)
- Thermal Conductivity (25°C)
- 20.3 W/mK (141 BTU-in/ft 2 -h-ºF)
- Dielectric Strength
- 11.6 kv/mm (295 volts/mil)
- Volume Resistivity
- <10 14 ohm-cm 2 /cm
- Dielectric Constant (1MHz)
- 9.2
- Dielectric Constant (10GHz)
- 9.2
- Dielectric Constant (30GHz)
- 9.2
- Dissipation Factor (1 MHz)
- 0.0003
- Loss Factor (10 GHz)
- 0.003
- Loss Factor (30 GHz)
- 0.004
- Internal Metallization
- Tungsten
- Firing Temperature
- 1600°C
- Brazed Component Materials
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- Alloy 194
- Alloy 42
- Copper Alloy
- Copper Tungsten
- Kovar
- Molybdenum
Plating Specifications
- Types of Plating
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- Electroless Gold per AMS 2422
- Electroless Nickel per AMS 2404
- Electrolytic Gold per AMS 2422
- Electrolytic Nickel per AMS 2403
- Gold Electroless Standards Met
- Meets MIL-G-45204 or AMS2422
- Gold Electrolytic Standards Met
- MIL-G-45204 or AMS2422
- Nickel Electroless Standards Met
- AMS2404
- Nickel Electrolytic Standards Met
- SAE AMS-QQ-N-290
- Electrolytic and Electroless Nickel Plating
- 50µ" TO 250µ"
- Electrolytic and Electroless Gold Plating Thickness
- 1µ" to 100µ"