6 Layer ENIG Via-In-Pad PCB
How To Understand Half Plug Hole And Full Plug Hole
The whole plug hole is the whole through hole is blocked by green oil. Generally, TOP and BOT fill the hole with green oil on both sides, and the fullness is more than 80%. The half plug hole refers to the plug from one side, opaque, half plug hole, fullness is not good control, general factory can only do about 30-50%, according to the factory’s own ability, mainly used in, one side of the window, one side of the window area, such as shielding cover, heat sink. The conventional plugging method of VIA is full plugging treatment.