THT (Through-Hole Technology) is a classic and critical assembly process in PCBA manufacturing. Its core principle involves inserting the metal leads of electronic components through pre-drilled holes in the PCB substrate, followed by soldering and fixing on the other side of the substrate to form a dual structure with both electrical connection and mechanical fixation. Compared with SMT (Surface Mount Technology), THT boasts irreplaceable mechanical strength, vibration resistance, and power-carrying capacity due to its unique "physical penetration + solder filling" design. It is particularly suitable for electronic devices that require long-term stable operation and resistance to harsh environments (high temperature, vibration, high pressure). Despite the miniaturization trend of electronic products, THT remains an indispensable core process in high-reliability and high-power scenarios, widely serving industries such as industrial control, automotive electronics, aerospace, and power supply equipment.

Contact us