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<p>For <a href="https://www.atech<a href="https://www.atechpcb.com/rigid-flex-pcb" target="_blank">pcb</a>.com/rigid-flex-pcb" rel="noopener noreferrer" target="_blank">rigid FR4 PCB</a>, it can be divided into three types according to the number of layers.</p><p><br></p><p>First, it is a<strong> single-sided PCB</strong>, usually with components on one side and circuits on the other. Since the circuit only appears on one side, this PCB board is called a single-sided PCB. Single-sided printed circuit boards are usually manufactured with simple technology and low cost, but the disadvantage is that single-sided printed circuit boards cannot be applied to complex products.</p><p><br></p><p>The second is the <strong>double-sided </strong><a href="https://www.atechpcb.com/rigid-flex-pcb" rel="noopener noreferrer" target="_blank"><strong>PCB</strong></a>, which is an extension of the single-sided printed circuit board. When the single-sided printed circuit board cannot meet the needs of electronic products, the double-sided printed circuit board will replace the single-sided printed circuit board. Both sides of the double-sided PCB are covered with copper and circuits, which can be done by making plated through holes.</p><p><br></p><p>The third is a <strong>multilayer PCB</strong>, which contains more than three layers of circuits. Insulating materials such as prepreg are used between the layers to bond and insulate the layers. Multilayer circuit board is the development direction of high-speed, multi-function, large-capacity, high-power electronic products.</p><p><br></p><p><strong>A-TECH</strong> Circuits has the ability to produce <a href="https://www.atechpcb.com/rigid-flex-pcb" rel="noopener noreferrer" target="_blank">rigid FR4 PCBs</a>, from simple single-sided PCBs to multilayer PCBs with a variety of required technologies. The number of PCB prototypes can range from rapid mass production to medium-sized products.</p>
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