0.5mm Solder Wire for Precision Boards, Micro Solder Joints Manual Soldering Solder Wire

Hand-repairing Circuit Boards: How to Choose Between 0.3mm and 0.5mm Solder Wire Diameters?

When manually repairing circuit boards, the selection of solder wire diameter directly affects solder joint formation and rework yield. 0.3mm solder wire is suitable for fine touch-up soldering and jumper wiring of small-size SMD components such as 0402 and 0603, while 0.5mm solder wire is more suitable for rapid tinning of QFP pins, power ground pads and large-area copper foils. 20 years of production line tests by JJY show that there are significant differences in melting consistency and wetting spreading ability between the two under the conditions of soldering iron temperature of 320℃ and dwell time of 2 seconds.