8 layer PCB using back drilling technics with Immersion Gold+ Selective Hard Gold

Here glad to share a new PCB we built recently for your reference, it's 8 layer PCB using back drilling technics with immersion gold +hard gold 30U" in surface finish.

Back drilling process is a technics can fulfill a certain type of the effect of blind vias, which can help customers save much more budget than the standard blind vias process.

This board also using two types of surface finish:Immersion Gold+ Selective Hard Gold on the pads.

8 layer PCB 100% E-Test Passed 

back drilling, board thickness 0.125"              

Immersion Gold + 30 micro inches Hard Gold          

50&100 Ohm Impedance Control 

If you have any similar PCB requirements, please feel free to give us one chance to quote.

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