Prototype de PCB en toute simplicité
Service complet de prototypage de PCB personnalisé.
9:00 - 18:00, Mon.- Fri. (GMT+8)
9:00 - 12:00, Sat. (GMT+8)
(Sauf les jours fériés chinois)
Question: Below design caused cold joint at the pads which are connecting to the center big pad.
Red stands for soldermask layer, Blue is for copper layer.
Answer: Better to have soldermask ink between those GND pads and the center pad to avoid solder paste on GND pads to be pulled away.

Correct design: Red stands for soldermask layer, Blue is for copper layer, ref below picture.
