Plated-through slots
1. The definition of plated slot
For a board, it may contain plated slot or unplated slot. Plated slot means this slot is plated with copper which can be used for electrical connection.
2. Pictures to show
3. Size of plated slot
The min side of plated slot is 0.5mm for PCBWay. For unplated slot, the min size is 0.8mm width. If the through-plating is realized within the circuit board it is called plated-through slits, through-plating on the outer edge of the board is called sideplating.
Basically, each milling with copper connections on TOP and BOTTOM will be produced as plated-through hole (PTH). Is a non-plated-through (NPTH) milling desired, the milling should be exempted from the copper.
4. Plated slot process
It is similar with plated holes . Milling the slots-copper sink– surface finish (tin-plated for hasl , gold-plated for immersion gold).
Plated through holes (PTH) or non-plated through-holes (NPTH)
For the design of non-circular holes, a few things must be considered, but the process is fairly straightforward overall. It should first be noted that slots can be defined as plated through holes (PTH) or non-plated through-holes (NPTH). PTH slots are most often used in component footprints, and most PCB layout CAD programs provide an option in their footprint editor to define a hole as circular or oval. This will be enough for Bittele’s PCB Fabrication team to recognize the hole and use the correct process, but for extra clarity, some clients also indicate slot holes on a fabrication layer of their Gerber files.
NPTH Slots can be designed in the same manner, and simply designated as NPTH / Mechanical in the CAD software, or they can be designed on the Board Outline Gerber layer. The following images show multiple options for both PTH and NPTH slots, first in a Gerber file view and then a 3D rendering of the resulting board.
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