2-layer PCB is enough to route any circuitry, at least in theory. One layer for vertical tracks, the other for horizontal tracks, connect them with via’s.
If you need route high-speed signals on the PCB, such as RF circuitry, switched-mode power supplies, and long digital buses, 4-layers are required. They are widely applied in modern datasheets, high-performance semiconductors, switched-mode PSU, heat-rejecting devices.
Price of a 4 layer PCB is roughly 3x-4x higher than that of a 2-layer one. However, most of the time 2 layer is not a viable option.
Read More: Should I Use Double Layer PCB or Single Layer PCB?
#PCB Design
As technology continues to advance in the electronics industry, packaging remains one of the key…
Bringing your electronic ideas to life begins with PCB drawing, which is the process of…
Printed Circuit Board design is one of the most significant processes in electronics production. Deciding…
The electronic devices we use are constantly changing and upgrading. They are getting smaller and more functional,…
PCB assembly is a highly complicated process, in which accuracy is always of the essence. Even…
It is important to ensure that a PCB design is reliable because any design mistake,…