BGA Underfill Epoxy

Epoxy-Based Thermo-Set Material for Enhanced Solder Joint Reliability

This epoxy-based thermo-set material is typically formulated with fillers, such as silica, to ensure optimal performance. It is designed to flow seamlessly into the gap between the PCB and the component, utilizing capillary action. Applied after solder reflow, it requires heat curing for maximum effectiveness.

Key characteristics include low viscosity, which enables efficient flow under components, even in tight spaces. In some cases, substrate heating is used to enhance the flow process further. By reinforcing solder joints, this material significantly improves their reliability, making it ideal for demanding electronic applications.