Custom Printed Circuit Board Manufacturer Electronic PCB SMT/DIP Assembly ♦ What Is SMT Assembly? SMT Assembly (Surface-Mount Technology Assembly) is the core process in mobile-phone PCB production where every tiny chip, resistor, capacitor, connector, etc. is placed and soldered onto the bare board without through-holes. In short, it turns the etched copper substrate into a functional circuit. ♦ What Is DIP Assembly? DIP Assembly (Dual In-line Package Assembly) is the