Printed Circuit Board Assembly (PCBA) is the process of soldering components like integrated circuits, resistors, and capacitors onto a PCB, creating a fully functional electronic assembly. This process requires precision to ensure that components are placed correctly and securely attached, with thorough quality control checks to ensure performance. PCBA is widely used in manufacturing electronic devices such as computers, smartphones, and automotive control systems, delivering a complete, ready-to-use circuit board solution.