Short answer

When designing multilayer electronic packaging, consider cordierite as a substrate material to enable the use of copper conductors, but carefully manage thermal dissipation.

Field: Final Production
Source: Academic Publication (2020)
Method: Experimental investigation and material characterization.
Evidence: Strong effect

Utilizing cordierite as a substrate material allows for multilayer electronic device packaging at temperatures below 1000°C, enabling the use of copper as a conductor. This final production research insight is drawn from a 2020 study published in Academic Publication. Using Experimental investigation and material characterization., researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing multilayer electronic packaging, consider cordierite as a substrate material to enable the use of copper conductors, but carefully manage thermal dissipation.

Study

Final ProductionHigh ImpactStrong effect

Cordierite Substrates Enable Lower-Temperature Multilayer Packaging with Copper Conductors

Utilizing cordierite as a substrate material allows for multilayer electronic device packaging at temperatures below 1000°C, enabling the use of copper as a conductor.

Academic Publication · 2020

Key Findings

01Cordierite substrates can be processed below 1000°C, allowing the use of copper conductors.
02Copper conductors are encapsulated by the cordierite matrix, though some copper diffusion occurs.
03The material exhibits a low dielectric constant (5.35), low loss angle (5 x 10^-4), reasonable strength (130 MPa), and high resistivity (~10^15 Ωcm).
04Low thermal conductivity (~2 Wm⁻¹K⁻¹) is a drawback, but thermal expansion can be matched to silicon by adjusting the MgO/Al2O3 ratio.

Application

Design takeaway

When designing multilayer electronic packaging, consider cordierite as a substrate material to enable the use of copper conductors, but carefully manage thermal dissipation.

How to apply

Explore cordierite-based substrates for applications where high electrical conductivity and lower processing temperatures are critical, and where thermal management solutions can be integrated.

Project actions

01When researching materials for electronic components, consider the trade-offs between electrical properties, processing temperature, and thermal conductivity.
02Investigate how material composition (e.g., MgO/Al2O3 ratio) can be tuned to meet specific application requirements like thermal expansion matching.

Method & Evidence

AimTo investigate cordierite as a substitute substrate material for alumina in multilayer device packaging, focusing on its compatibility with copper conductors at reduced processing temperatures.

MethodExperimental investigation and material characterization.

ProcedureCordierite-based substrates were prepared using milled glass powder and a doctor blading technique. Copper was screen-printed onto dried sheets, which were then laminated and fired. The resulting materials were analyzed for conductor encapsulation, copper diffusion, phase formation during crystallization, and material properties.

ContextElectronic device packaging, materials science, ceramic processing.

Variables

IVSubstrate material (cordierite vs. alumina), processing temperature.

DVConductor material compatibility (copper), electrical properties (dielectric constant, loss angle, resistivity), mechanical strength, thermal conductivity, thermal expansion.

CVGlass particle shape, average size, size distribution, minor oxide additives in glass, lamination pressure, firing atmosphere.

Strengths & Limitations

Strengths

+Investigates a novel material substitution for electronic packaging.
+Identifies key material properties and processing parameters.

Limitations

The low thermal conductivity of cordierite is a significant limitation that may restrict its use in high-power applications without additional cooling solutions.

Reliability & validity

The study's findings on material properties and phase transformations are based on experimental characterization, suggesting good internal validity. However, the scope of 'multilayer device packaging' and the specific application context are not fully detailed, which might limit generalizability.

Think critically

How might the observed copper diffusion affect the long-term reliability and performance of electronic devices packaged using this cordierite-based approach?

Design Principles

"Material selection for electronic packaging should balance electrical performance, processing constraints, and thermal management requirements."

This research opens avenues for more cost-effective and potentially higher-performance electronic components by leveraging copper's superior conductivity over traditional materials like silver. The lower processing temperatures also contribute to reduced energy consumption during manufacturing.

What This Means for Your Design

Using a special ceramic called cordierite lets us make electronic parts with copper wires at lower temperatures, which is cheaper and better for electricity, but not as good for heat.

How to use in your project

1.Reference this study when discussing material selection for electronic packaging, particularly concerning the benefits of using copper conductors and the challenges of thermal management.

Add to My Project

Quick Cite

Paragraph starter

Research by Bridge (2020) indicates that cordierite can serve as a viable substrate for multilayer electronic packaging, enabling the use of copper conductors due to its lower processing temperature requirements (<1000°C). While offering excellent electrical properties such as a low dielectric constant and high resistivity, its low thermal conductivity presents a challenge that must be addressed in the design.

Source

Academic Publication

Aspects of electronic device packaging

journal · 2020

View source

Questions About This Research

What does the research say about cordierite substrates enable lower-temperature multilayer packaging with copper conductors?: When designing multilayer electronic packaging, consider cordierite as a substrate material to enable the use of copper conductors, but carefully manage thermal dissipation. Evidence: Academic Publication (2020).
Why does "Cordierite Substrates Enable Lower-Temperature Multilayer Packaging with Copper Conductors" matter for design?: This research opens avenues for more cost-effective and potentially higher-performance electronic components by leveraging copper's superior conductivity over traditional materials like silver. The lower processing temperatures also contribute to reduced energy consumption during manufacturing.
How can designers apply this research?: When designing multilayer electronic packaging, consider cordierite as a substrate material to enable the use of copper conductors, but carefully manage thermal dissipation.
What were the main findings?: Cordierite substrates can be processed below 1000°C, allowing the use of copper conductors.. Copper conductors are encapsulated by the cordierite matrix, though some copper diffusion occurs.. The material exhibits a low dielectric constant (5.35), low loss angle (5 x 10^-4), reasonable strength (130 MPa), and high resistivity (~10^15 Ωcm).. Low thermal conductivity (~2 Wm⁻¹K⁻¹) is a drawback, but thermal expansion can be matched to silicon by adjusting the MgO/Al2O3 ratio.
What research method was used?: Experimental investigation and material characterization..
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2020 journal from Academic Publication.
What should I do differently in my next project?: Explore cordierite-based substrates for applications where high electrical conductivity and lower processing temperatures are critical, and where thermal management solutions can be integrated.
What are the limitations?: The study notes copper diffusion and the formation of an unstable phase during early crystallization. The low thermal conductivity is also a significant limitation that requires further design consideration.