是黏貼蒙版層, 頂層和底層, THT 組件所必需的?

我知道貼掩模層也稱為模板層. It's only used for assembly. 我想知道貼蒙版層是否 (頂層和底層) 對於通孔元件來說是必要的. 對於 SMD 元件,我知道需要使用焊膏掩模層來焊接元件. 通孔元件有必要嗎?

不. Paste mask is normally used only for reflowing surface mount components, while the through hole components are soldered either manually or by wave solder bath at a later stage.

If you have through hole parts and the surface mount components on the bottom side, the paste mask stencil is not required, as the parts will all be soldered at once in a wave solder bath. This process requires you to generate a glue dot coordinates file, which will be used to place a dot of glue under the surface mount component and that will keep the part in place during the soldering process.

If the only through hole parts in the PCB were the connectors, it is also possible to reflow through hole components with solder paste. That requires some tweaking to get the right pad size and stencil opening. All we need to do is to have a larger pad on the top side, so that there was enough paste on the pad to wick down the hole and ensure a solid solder joint.

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奧利佛史密斯

奧利佛史密斯

Oliver 是一位經驗豐富的電子工程師,擅長 PCB 設計, 類比電路, 嵌入式系統, 和原型製作. 他的深厚知識涵蓋原理圖捕捉, 韌體編碼, 模擬, 佈局, 測試, 和故障排除. Oliver 擅長利用他的電氣設計才能和機械才能將項目從概念到大規模生產.
奧利佛史密斯

奧利佛史密斯

Oliver 是一位經驗豐富的電子工程師,擅長 PCB 設計, 類比電路, 嵌入式系統, 和原型製作. 他的深厚知識涵蓋原理圖捕捉, 韌體編碼, 模擬, 佈局, 測試, 和故障排除. Oliver 擅長利用他的電氣設計才能和機械才能將項目從概念到大規模生產.

其他人在問什麼

組裝後面板如何分離?

我需要設計LED燈管PCB,寬度只有20mm, 所以至少會有 10 一塊面板上彼此相鄰的零件. 議會大廈警告我, 分離這些與標準 PCB 不同. 這些是如何分開的?

從部落格文章閱讀詳細建議

PCB 安裝孔的完整指南
李會

PCB 安裝孔的完整指南

什麼是PCB安裝孔? PCB安裝孔是指鑽穿印刷電路板的孔 (印刷電路板), 所以董事會可以

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