2026-08-02

When your PCB has BGAs and QFNs sitting right next to through-hole connectors, traditional wave soldering becomes a liability. Selective wave soldering targets just the joints that need solder, keeping everything else cool while delivering first-pass yields above 99.5%. This guide walks through the process, equipment, and real-world applications that make it the go-to choice for automotive and aerospace manufacturers running mixed-technology lines.

Solder paste is the critical mixture of metal powder and flux that holds every smartphone, car computer, and airplane control system together. This comprehensive guide walks through solder paste composition, how to choose the right type for your application, common defects to avoid, and the storage practices that keep production lines running smoothly. Whether you are a production manager or procurement specialist, expert Jace Liu breaks down everything from stencil printing control to reflow oven integration so you can reduce defects and improve yield rates.