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Conductive silicone is a material that connects electrical components to a substrate and acts as a heat sink. It can be in the form of gels, rubbers, or liquids but is usually a paste. It has advantages over traditional lead solder, including lower curing temperature and reduced mismatch coefficient of thermal expansion. It is also environmentally friendly.
Conductive silicone is a material used to connect electrical components to a substrate. It is able to conduct heat well, which makes it a good material to use as a heat sink. Bonding electronic components with silicone has many advantages over traditional lead solder.
This material is a combination of organic and inorganic polymers. Silicon, along with other inorganic components, is bonded with organic materials to form silicone. The resulting product can take many different forms, including gels, rubbers, and liquids, but conductive silicone is usually in the form of a paste.
As a paste, conductive silicone can be used to attach electronic components to a substrate. The paste is applied as a thick liquid and then hardened by applying moderate heat. The cured material remains strong yet flexible under normal operating conditions in an electronic device. Conductive silicone is not suitable for use in extreme cold or heat or in a vacuum.
A good conductor of heat, this material is particularly useful as a heat sink. By transferring heat from sensitive electrical components in a computer or other device, conductive silicone can protect them from damage. The conductive silicone draws heat away from the components and discharges it harmlessly into the substrate material.
Conductive silicone is used in electronics because it has many advantages over traditional soldering. For one thing, the material can be cured at a temperature of just 302 degrees Fahrenheit (150 degrees Celsius). Many modern computer components are very sensitive to heat, and the relatively low heat required to connect components using conductive silicone can be applied without damaging the computer.
Conductive silicone also reduces the mismatch coefficient of thermal expansion. A more flexible material than lead solder, the expansion of silicone does not break the electrical connection between the component and the substrate when it heats up. Another benefit of using conductive silicone is that it doesn’t create electrical flux, which needs to be cleaned up by traditional soldering.
In the past, lead or an alloy of lead and tin was used to solder computer components together. With a growing awareness of the environmental hazards caused by lead, engineers have turned to alternative methods of connecting these components. While other metals can be used, such as cadmium, mercury or arsenic, these metals are also toxic. A conductive silicone adhesive provides an environmentally friendly alternative to traditional soldering.
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