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10 layer & 20 layer PCB

Usually,10 & 20 layers PCB are HDI board,but some are not .Some with big trace width and space,holes are over 0.3mm too. We have much experience in doing 10 layer PCB & 20 layer PCB.
A ten-layer board should be used when six routing layers are required.  Ten-layer boards, therefore, usually have six signal layers and four planes.  Having more than six signal layers on a ten-layer board is not recommended.  Ten-layers is also the largest number of layers that can usually be conveniently fabricated in a 0.062" thick board.  Occasionally you will see a twelve-layer board fabricated as a 0.062" thick board, but the number of fabricators capable of producing it are limited..

High layer count boards (ten +) require thin dielectrics (typically 0.006" or less on a 0.062" thick board) and therefore they automatically have tight coupling between layers.  When properly stacked and routed they can meet all of our objectives and will have excellent EMC performance and signal integrity.

A very common and nearly ideal stack-up for a ten-layer board is shown in Figure 12.  The reason that this stack-up has such good performance is the tight coupling of the signal and return planes, the shielding of the high-speed signal layers, the existence of multiple ground planes, as well as a tightly coupled power/ground plane pair in the center of the board.  High-speed signals normally would be routed on the signal layers buried between planes (layers 3-4 and 7-8 in this case).


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Examples of what we did for 10 and 20 layer PCBs.
12 Layer high Tg PCB,5.0mm,564*502mm,countersink holes,pressfit holes +/-0.05mm,,used in test equipment
12 Layer high Tg PCB,5.0mm,564*502mm,countersink holes,pressfit holes +/-0.05mm
16 Layer PCB ,FR4, IT180,thickness 2.7mm,min trace/space 0.11/0.11mm, lead time 10 days.
16 Layer PCB ,FR4, IT180,thickness 2.7mm,min trace/space 0.11/0.11mm
Countersink holes details,5 different holes in 12 layer board
Countersink holes details
An example of 12 layer stack up
An example of 12 layer stack up
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    • Standard PCB
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