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Pavan Sai , 06-03-2025, 10:26 PM

Hi @Robert Feranec ,

So, as part of my research work, I am designing a 4-layer PCB that has ADCs, OpAmps and a voltage regulator IP. All of them are SMD components. The board design is fairly simple, but I want to understand the factors that I am supposed to consider while deciding if I should be proceeding with a 2-sided PCB (i.e., SMD components present on 2 sides of the PCB board) vs a single-sided PCB. Can you please provide some insights on this? It'd greatly help me proceed further in my project.

Looking forward to your response!

Thanks,
Pavan

QDrives , 06-04-2025, 01:28 AM

2-sided:
- Smaller boards
- **Can** be better in PI
- More expensive in assembly
- Gluing may be required
- Thermal stress for components going twice through reflow oven
- More difficult in testing, both production and troubleshooting

Robert Feranec , 06-04-2025, 06:06 AM

If a board is simple I always consider to do all components on 1 side. Especially because it is cheaper to build. Especially, these simple circuits may need multiple versions where you keep improving them, so keeping it cheap can save money multiple times.