Unraveling the Layers
1. The Stack-Up Secret
So, you’re wondering about the thickness of a 20 layer PCB, huh? It’s a fair question! After all, when you’re dealing with intricate electronics, every millimeter counts. Think of a PCB, or printed circuit board, like the nervous system of your gadgets. The more complex the device, the more “nerves” (or layers) it needs to function properly. A 20 layer PCB is definitely on the complex side!
Now, before we dive into the specifics, let’s establish a baseline. PCBs aren’t just slapped together; they’re carefully constructed with specific thicknesses in mind. These thickness requirements are driven by a few key factors, including the components that need to be mounted, the signals that need to be routed, and, of course, any mechanical constraints imposed by the final product’s enclosure. Imagine trying to cram a super-thick board into a sleek, thin smartphone not gonna happen!
The thickness of a PCB is also affected by material used. Typical PCB are made up of fiberglass which contributes to the overall thickness. However, if there is a need for high temperature or high speed signals, other exotic materials can be used. Knowing what materials are being used is important when calculating for overall PCB thickness
Ultimately, understanding the expected thickness is a collaboration between designers, engineers and manufacturers. It’s best practice to communicate early and often to make sure your PCB is exactly what you want.