PCB新聞 - 常見PCB板設計要求

在常用的 印刷電路板, the matters needing attention in layout design are described in detail as follows:

1) Single panel: This type of panel is usually used when the cost is lower. 佈局設計中, 有時需要元件或跨接導線來跳過電路板的痕迹. 如果太多了, 您應該考慮使用雙面板.

2) Double panel: Double panel can be used or not used PTH. 因為PTH板很貴, 它僅在電路的複雜性和密度需要時使用.

在佈局設計中, 部件表面的導線數量必須保持在最低限度，以確保所需材料易於獲得.

在PTH板中, 電鍍通孔僅用於電力連接，不用於部件安裝. 出於經濟和可靠性考慮, 孔的數量應保持在最低限度.

選擇單面或雙面, it is very important to consider the surface area (C) of the components, 和 the ratio of it to the total area of the printed circuit board (S) is an appropriate constant ratio. 安裝很有用. 值得注意的是，“US”通常指面板一側的面積.

在正常情况下, 單板或雙板的選擇必須滿足最有效的成本利用率. 根據經驗, 帶有電鍍通孔的雙面印刷電路板的成本是單面板的5-10倍. 類似地, 組裝組件的成本也是需要考慮的一個重要方面. The cost of assembling a single-sided printed circuit board (manual) is about 25% -50% of the cost of the circuit board, 以及組裝帶有PTH的單面印刷電路板，用於雙面印刷電路板的組件, 成本為其成本的15%-30%.

印刷電路板不僅提供機械支撐, 還可以連接安裝在其上的組件. 因此, 印刷電路板設計師, it is necessary to understand the entire physical size of the panel (outer frame size), 安裝孔的位置, 高度限制和相關細節. The following are the main factors to be considered in the mechanical design of printed circuit boards:

1) The best panel size suitable for printed circuit board production;

2) The position of panel mounting holes, 括弧, 夾板, 剪輯, shielding boxes and radiators;

3) The special placement requirements of components are similar to those operated on the front panel, 例如按鈕, 變阻器, 等.

4) Suitable aperture for component installation;

5) The assembly method of the circuit board (vertical installation/horizontal installation);

6) Suitable fixing devices for heavier components;

7) The assembled circuit board must have compression resistance and shock resistance during transportation;

8) Cooling method;

The above is an introduction to the design requirements of commonly used PCB板. Ipcb也提供給 PCB製造商 and PCB製造 科技