Choosing a good circuit board substrate is very important, and the decision is often based on your application. Although most PCB manufacturers work with a wide range of substrate materials, you can still get the right one for your project with the help of an experienced PCB manufacturer. In the following paragraphs, we'll discuss different options and how to select a good substrate for your application. We'll also discuss the importance of quality control and the different ways to ensure that your circuit boards are manufactured using high-quality materials.

Materials used to make circuit board can also affect the performance of the boards. The dielectric constant, for example, varies according to frequency. This frequency dependence introduces phase distortion into wideband applications. In addition, as the frequencies increase, transmission line impedance decreases. The faster edges of signals reflect more than slower ones. Other properties that determine the conductivity of a material include the dielectric breakdown voltage, the highest voltage gradient it can withstand, and its tracking resistance.

The materials used in a circuit board determine its electrical and mechanical properties. A PCB substrate should be durable. The substrate must be lightweight and flexible. It should be able to withstand the temperature fluctuations in the board. A high-quality product will have a thick layer of FR4 and a thin layer of copper. The board should be able to withstand a voltage gradient. The temperature range of FR4 should be sufficient to protect your electronics. A high-temperature material can withstand a higher one.

The most common type of circuit board substrate is an FR-4. It is a fiberglass-epoxy laminate, and is often used for multiple-layer boards. It is important to remember that FR-4 is not flame-retardant, so it is not advisable for use in multi-layer designs. It will have low-thermal resistivity, which is necessary for power electronics.