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Routing Signals Between PCB Layers – Part 3 Interplane Voltage

Routing Signals Between PCB Layers –  Part 3 Interplane Voltage

Routing Signals Between PCB Layers –  Part 3 Interplane Voltage (Frequency Domain Measurement) (Spectrum Analyzer Screen at 10 dB/div Vertically and 100 MHz/div Horizontally) Abstract: Four layer PCBs are used in a wide variety of applications. However, usually it is necessary for some signal paths to be routed on both the top and bottom signal layers to achieve required routing density. Using a model of a four layer PCB with… Read More

Outer Layer Image and Soldermask

Outer Layer Image and Soldermask

Alright let us do a quick re-cap of what we have covered so far. We have given an overview of some basic materials and the initial process for developing imaging for inner layers. We have covered the lamination and drill process. Now we are coming down the home stretch. Now that the panels are drilled we need to do the outer layer image and copper plating process. That begins with… Read More