Whenever thinking of your design, one of the essential questions will almost always be what type of printed circuit haie (PCB) is needed. Each type has advantages and different cost effects.
Some of most important items to bear in mind are:
Size & Fit
The decision you make will be based on the order of need for these parameters.
If price are the important factor in your design, it is important to stay within the most typically used technologies. Price is determined by ease of manufacture and also by whether or not the materials and technologies chosen are commonly employed by manufacturers. The greater the volume produced, the cheaper the expense of each individual board.
Rigid PCBs are the most commonly used PCBs. As the layer depend of the PCB boosts, so does the price, with 1-2 Layer PCBs being the least expensive. Applications such as the Internet of Things (IoT) and size constraints may require 4 Level and above PCBs.
With regard to more information in how Rigid PCBs are made look into a blog we made earlier - Exactly what is a Printed Routine Board?
The most frequent, and therefore cost effective, material is FR4, this glass fibre epoxy laminate. FR represents flame retardant and has a max ambient temp of 120℃ and 130℃.
Other materials such as TG170, TG150 and CEM can be used for bettering characteristics such as thermo-mechanical properties. For example; TG170 is employed when the heat dissipation of the element is higher than normal electronic components.
Size & fit
To reduce the rigid circuit thickness, substance thicknesses between 0. 8mm to at least one. 6mm can be used. Again, the less common the usage, the higher the price. That maybe necessary to reduce the size of the PCB to fit into a compact housing. This can be done by increasing the layer count and created connections (vias) between layers.
Developed in the 1950s, Flexible (flex) circuits have grown to be ubiquitous in connection type applications. Similar to firm, they are offered in 1 to many layers. Often a stiffener is put into allow for the weight of components.
Flex circuits are used in consumer devices, automobile applications and others where space and overall flexibility are important.
Other advantages include
Increased heat diffusion
Cost specifically in high volume use