|Unit Price:||32 USD|
|Min. Order:||1 Piece/Pieces|
Model No.: Ceramic Substrates pcb
How do I choose a PCB material?
The life and performance of the PCB board depends on the choice of circuit board material. In order to select the correct circuit board material, it is important to check the materials that can be used for different circuit board categories. There are different characteristics and physical properties that help to choose a sheet. When evaluating PCB materials, it is necessary to ensure that the design requirements meet the required board performance.
When a large amount of current needs to be handled, the spacing and width of the circuit board are also important. The structural strength of the board is determined by the substrate and the laminate. The choice of materials for these two layers depends on the type of board.
The layers on the PCB and their significance
The PCB board consists of four layers, namely substrate, laminate, solder mask and screen printing. The substrate and laminate together define the basic electrical, mechanical and thermal circuit board properties
Glass fiber FR4 is the most common material used for PCB substrates. Here, FR stands for flame retardant. It is suitable due to its rigidity and thickness. For Custom Flexible PCB fabrication, use Kapton or equivalent plastics.
The thickness of the PCB board depends on its application or purpose. For example, most Sparkfun products have a thickness of 1.6mm, while Arduino Pro products have a thickness of 0.8mm. PCBs made of cheaper materials such as epoxy resin lack durability.
Substrates are found in low-cost consumer electronics products. These have low thermal stability, which causes them to easily lose lamination. When the soldering iron is fixed on the board for a long time, the substrate can also cause smoke, which makes them easy to identify.
The non-conductive layer of dielectric material is selected based on the dielectric constant.
The substrate must meet certain required properties, such as the glass transition temperature (Tg). Tg is the point at which heat causes the material to deform or soften. A variety of materials can be used for the substrate, such as aluminum or insulated metal substrate (IMS) FR-1 to FR-6, polytetrafluoroethylene (PTFE), CEM-1 to CEM-5, G-10 and G-11, RF-35, polyimide, alumina and flexible substrates such as Pyralux and Kapton.
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12 hours for 2 layer PCB
24 hours for 4 layer PCB
48 hours for 6layer PCB
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