What is Conductive Adhesive
Conductive adhesive is a type of adhesive material that is specifically designed to provide both mechanical bonding and electrical conductivity. It is commonly used to assemble and manufacture printed circuit boards to create electrical connections between different components or layers.
Conductive adhesives are formulated by combining a polymer matrix with conductive fillers, such as silver, copper, or carbon particles. These conductive fillers enable the flow of electrical current, allowing for the transmission of signals or power between components.
The choice of conductive filler depends on factors such as conductivity, cost, and potential drawbacks associated with each material. For example, silver is known for its high conductivity but is also relatively expensive. Copper is another commonly used filler with good conductivity and lower cost compared to silver. Carbon-based fillers, such as graphite, are often used as a more cost-effective option.
Conductive adhesives offer several advantages over traditional soldering methods, including lower processing temperatures, reduced thermal stress on components, and the ability to bond temperature-sensitive substrates without causing damage. They also provide good mechanical properties, such as high bond strength and flexibility, making them suitable for various applications in the PCB industry.